Rigging hardware

Blocks & sheaves

Name: Sharrow Lifting Products — Sharrow Lifting Products
Address: 2943 Yorkton Blvd., Little Canada, MN, 55117, US
Telephone: (651) 489-1341

787 part numbers — McKissick snatch blocks, crane hook blocks, overhaul balls, utility and manila rope blocks, and replacement sheaves.

Load on the block, not line pull

A snatch block sees up to twice what the rope is pulling

The rating on a block is the load on the block. When the rope turns all the way back through it — a 180° wrap — both parts of the rope pull on the block and it carries twice the line pull. At a shallower angle it carries less, but never as little as the line pull alone. Size the block to the resultant load, not to the winch.

Ratings on this page are transcribed from Crosby and are published in three different units — metric tons on the McKissick snatch blocks, short tons on the utility blocks, pounds on the manila rope blocks. The unit is on every column header. Read it.

Jump toSnatch blocks169 Crane hook blocks Overhaul balls99 Wire rope utility blocks36 Manila rope blocks60 Oilfield blocks18 Sheaves405

Sheave diameter is rope life

A rope bent over a small sheave fatigues fast. Each row gives the sheave diameter and the rope diameter range it is grooved for; stay inside the range and, where you have the choice, take the bigger sheave.

BB or RB

The bearing code on the snatch blocks: BB is bronze bushed, RB is roller bearing. Roller bearings run cooler and easier under continuous line speed; bronze is the simpler, cheaper choice for occasional pulls.

The footnotes are part of the rating

Crosby’s design factor is printed under each table and is not the same across this page. A stock number marked * on a snatch block carries a lower factor than the rest of its table. Every mark is explained under the table it appears in.

9 products · 169 part numbers

Snatch blocks

Single-sheave blocks whose side plate opens so the rope drops in without reeving from the end — including while the block is hanging. Shackle fitting to pin to an anchor, hook fitting to drop over one, tail board to bolt down. The 2–12 t and 15–60 t ranges are separate families with separate tables. Check the wire rope diameter range on the row; the groove is cut for it.

Snatch Block, Shackle Fitting, Single Sheave, 2–12 t

Crosby

25 part numbers

Filter 25 part numbers

Working Load Limit (t)

Wire Rope Diameter (in)

Sheave Diameter (in)

Working Load Limit (t)	Wire Rope Diameter (in)	Sheave Diameter (in)	Bearing Code	Weight Each (lb)	Catalog No.	Stock No.	A (in)	B (in)	C (in)	D (in)	E (in)	F (in)	G (in)	H (in)
2	5/16 - 3/8	3	BB	4	419 w/Eye	109037†	8.67	3.00	2.64	6.61	0.56	0.56	1.38	1.38
2	5/16 - 3/8	3	BB	5	419	109091	9.27	3.00	2.64	7.27	0.50	0.50	1.32	1.56
4	3/8 - 1/2	4.5	BB	12	419	109064	13.38	4.24	3.13	10.57	0.62	0.69	1.70	2.00
5	3/8 - 1/2 ‡	4	BB	11	L-170	599828	13.88	4.50	2.94	10.94	0.62	0.69	1.70	2.00
5	3/8 - 1/2 ‡	4	RB	11	L-170	599837	13.88	4.50	2.94	10.94	0.62	0.69	1.70	2.00
6*	3/8 - 1/2	5	BB	13	L-160	599524	13.82	5.12	3.69	10.57	0.62	0.69	1.70	2.00
6*	3/8 - 1/2	5	RB	13	L-160	599533	13.82	5.12	3.69	10.57	0.62	0.69	1.70	2.00
8	5/8 - 3/4	6	BB	28	419	109126	18.93	6.00	4.19	14.68	1.25	1.25	3.00	3.47
8	5/8 - 3/4	6	RB	28	419	109153	18.93	6.00	4.19	14.68	1.25	1.25	3.00	3.47
8	5/8 - 3/4	8	BB	33	419	109224	20.99	8.12	4.19	15.68	1.25	1.25	3.00	3.47
8	5/8 - 3/4	8	RB	33	419	109251	20.99	8.12	4.19	15.68	1.25	1.25	3.00	3.47
8	5/8 - 3/4	10	BB	43	419	109322	23.06	10.12	4.19	16.75	1.25	1.25	3.00	3.47
8	5/8 - 3/4	10	RB	43	419	109359	23.06	10.12	4.19	16.75	1.25	1.25	3.00	3.47
8	5/8 - 3/4	12	BB	55	419	109420	25.87	12.12	4.19	18.56	1.25	1.25	3.00	3.47
8	5/8 - 3/4	12	RB	55	419	109457	25.87	12.12	4.19	18.56	1.25	1.25	3.00	3.47
8	5/8 - 3/4	14	BB	67	419	109527	27.37	14.12	4.19	19.06	1.25	1.25	3.00	3.47
8	5/8 - 3/4	14	RB	67	419	109545	27.37	14.12	4.19	19.06	1.25	1.25	3.00	3.47
12	3/4 - 7/8	6	BB	28	417	168972	18.93	6.00	4.19	14.68	1.25	1.25	3.00	3.47
12	3/4 - 7/8	6	RB	28	417	193757	18.93	6.00	4.19	14.68	1.25	1.25	3.00	3.47
12	3/4 - 7/8	8	BB	34	417	168990	20.99	8.12	4.19	15.68	1.25	1.25	3.00	3.47
12	3/4 - 7/8	8	RB	34	417	193819	20.99	8.12	4.19	15.68	1.25	1.25	3.00	3.47
12	3/4 - 7/8	10	BB	42	417	193882	23.06	10.12	4.19	16.75	1.25	1.25	3.00	3.47
12	3/4 - 7/8	10	RB	42	417	193935	23.06	10.12	4.19	16.75	1.25	1.25	3.00	3.47
12*	5/8 - 3/4	5.75	BB	29	L-160	599588	19.03	6.00	4.19	14.78	1.25	1.25	3.00	3.47
12*	5/8 - 3/4	5.75	RB	29	L-160	599597	19.03	6.00	4.19	14.78	1.25	1.25	3.00	3.47

4:1 Design Factor.
*3.5:1 Design Factor.
† Fitted with 1-1/4" ID Swivel Eye
‡ Special Dual Groove Sheave also accepts 1-1/4" Manilla Rope.

Working Load Limit (t)	Wire Rope Diameter (in)	Sheave Diameter (in)	Bearing Code	Weight Each (lb)	Catalog No.	Stock No.	A (in)	B (in)	C (in)	D (in)	E (in)	F (in)	G (in)	H (in)
15	3/4 - 7/8	16	BB	130	419	109607	31.75	16.12	5.09	22.00	1.50	1.75	3.12	3.12
15	3/4 - 7/8	16	RB	130	419	109625	31.75	16.12	5.09	22.00	1.50	1.75	3.12	3.12
15	7/8 - 1	18	BB	159	419	109643	33.12	18.12	5.09	22.25	1.50	1.75	3.12	3.12
15	7/8 - 1	18	RB	159	419	109661	33.12	18.12	5.09	22.25	1.50	1.75	3.12	3.12
15	3/4 - 7/8	8	BB	59	421	108308	23.00	8.12	5.09	17.19	1.50	1.75	3.12	3.12
15	3/4 - 7/8	8	RB	59	421	108309	23.00	8.12	5.09	17.19	1.50	1.75	3.12	3.12
15	3/4 - 7/8	10	BB	68	421	108390	24.75	10.12	5.09	17.94	1.50	1.75	3.12	3.12
15	3/4 - 7/8	10	RB	68	421	108391	24.75	10.12	5.09	17.94	1.50	1.75	3.12	3.12
20	1 - 1-1/8	8	BB	92	431	121022	26.57	8.12	6.00	19.76	2.00	2.75	3.72	4.00
20	1 - 1-1/8	8	RB	92	431	121040	26.57	8.12	6.00	19.76	2.00	2.75	3.72	4.00
20	1 - 1-1/8	10	BB	112	431	121095	28.64	10.12	6.00	20.72	2.00	2.75	3.72	4.00
20	1 - 1-1/8	10	RB	112	431	121111	28.64	10.12	6.00	20.72	2.00	2.75	3.72	4.00
20	1 - 1-1/8	12	BB	130	431	121175	30.65	12.25	6.00	21.78	2.00	2.75	3.72	4.00
20	1 - 1-1/8	12	RB	130	431	121193	30.65	12.25	6.00	21.78	2.00	2.75	3.72	4.00
20	1 - 1-1/8	14	BB	160	431	121255	33.00	14.00	6.00	23.25	2.00	2.75	3.72	4.00
20	1 - 1-1/8	14	RB	160	431	121273	33.00	14.00	6.00	23.25	2.00	2.75	3.72	4.00
25	1 - 1-1/4	18	BB	270	431	119495	41.36	18.25	7.13	29.12	2.00	3.12	3.50	4.81
25	1 - 1-1/4	18	RB	280	431	119496	41.36	18.25	7.13	29.12	2.00	3.12	3.50	4.81
25	1 - 1-1/4	8	BB	103	435	208954	27.08	8.25	6.13	20.21	2.00	2.75	3.72	4.00
25	1 - 1-1/4	10	BB	117	435	208965	29.33	10.24	6.13	21.46	2.00	2.75	3.72	4.00
30	1 - 1-1/4	20	BB	503	431	119589	52.40	20.25	8.31	38.34	2.50	3.94	5.62	7.06
30	1 - 1-1/4	20	RB	485	431	119598	52.40	20.25	8.31	38.34	2.50	3.94	5.62	7.06
30	1 - 1-1/4	24	BB	581	431	119605	56.00	24.25	8.31	40.00	2.50	3.94	5.62	7.06
30	1 - 1-1/4	24	RB	575	431	119614	56.00	24.25	8.31	40.00	2.50	3.94	5.62	7.06
30	1 - 1-1/4	12	BB	208	435	208976	36.61	12.25	7.00	27.37	2.00	3.12	3.50	4.81
30	1 - 1-1/4	14	BB	230	435	208977	38.86	14.25	7.00	28.62	2.00	3.12	3.50	4.81
60	1 - 1-1/4	12	BB	315	435	8027291	41.65	12.12	8.66	33.19	2.06	2.40	5.75	6.12

Working Load Limit (t)	Wire Rope Diameter (in)	Sheave Diameter (in)	Bearing Code	Weight Each (lb)	Catalog No.	Stock No.	A (in)	B (in)	C (in)	D (in)	E (in)	F (in)	G (in)	H (in)
2	5/16 - 3/8	3	BB	5	418	108038	9.74	3.00	2.64	3.59	0.75	7.24	0.75	1.00
4	3/8 - 1/2	4.5	BB	12	418	108065	14.12	4.24	3.13	5.24	1.00	10.13	0.94	1.87
5	3/8 - 1/2 ‡	4	BB	11	L-170	599800	14.62	4.56	2.94	5.24	1.00	10.50	0.94	1.87
5	3/8 - 1/2 ‡	4	RB	11	L-170	599819	14.62	4.56	2.94	5.24	1.00	10.50	0.94	1.87
6*	3/8 - 1/2	5	BB	13	L-160	599506	14.56	5.12	3.69	5.24	1.00	10.13	0.94	1.87
6*	3/8 - 1/2	5	RB	13	L-160	599515	14.56	5.12	3.69	5.24	1.00	10.13	0.94	1.87
7T*	3/4 - 7/8	6	BB	28	C-720	280010	16.14	6.00	3.81	6.27	1.44	11.33	1.25	1.61
8	5/8 - 3/4	6	BB	27	418	108127	18.95	6.00	4.19	6.81	1.56	13.55	1.31	2.41
8	5/8 - 3/4	6	RB	27	418	108154	18.95	6.00	4.19	6.81	1.56	13.55	1.31	2.41
8	5/8 - 3/4	8	BB	33	418	108225	21.01	8.12	4.19	6.81	1.56	14.54	1.31	2.41
8	5/8 - 3/4	8	RB	33	418	108252	21.01	8.12	4.19	6.81	1.56	14.54	1.31	2.41
8	5/8 - 3/4	10	BB	41	418	108323	23.08	10.12	4.19	6.81	1.56	15.61	1.31	2.41
8	5/8 - 3/4	10	RB	41	418	108350	23.08	10.12	4.19	6.81	1.56	15.61	1.31	2.41
8	5/8 - 3/4	12	BB	48	418	108421	25.89	12.12	4.16	6.81	1.56	17.42	1.31	2.41
8	5/8 - 3/4	12	RB	48	418	108458	25.89	12.12	4.16	6.81	1.56	17.42	1.31	2.41
8	5/8 - 3/4	14	BB	55	418	108528	27.39	14.12	4.19	6.81	1.56	17.92	1.31	2.41
8	5/8 - 3/4	14	RB	55	418	108546	27.39	14.12	4.19	6.81	1.56	17.92	1.31	2.41
12	3/4 - 7/8	6	BB	26	416	193427	19.89	6.00	4.19	7.88	1.56	14.27	1.44	2.62
12	3/4 - 7/8	6	RB	26	416	193472	19.89	6.00	4.19	7.88	1.56	14.27	1.44	2.62
12	3/4 - 7/8	8	BB	33	416	193490	21.95	8.12	4.19	7.88	1.56	15.27	1.44	2.62
12	3/4 - 7/8	8	RB	33	416	193542	21.95	8.12	4.19	7.88	1.56	15.27	1.44	2.62
12	3/4 - 7/8	10	BB	41	416	193613	24.02	10.12	4.19	7.88	1.56	16.34	1.44	2.62
12	3/4 - 7/8	10	RB	41	416	193677	24.02	10.12	4.19	7.88	1.56	16.34	1.44	2.62
12*	5/8 - 3/4	5.75	BB	29	L-160	599560	19.99	6.00	4.19	7.88	1.56	14.37	1.44	2.62
12*	5/8 - 3/4	5.75	RB	29	L-160	599579	19.99	6.00	4.19	7.88	1.56	14.37	1.44	2.62

Working Load Limit (t)	Wire Rope Diameter (in)	Sheave Diameter (in)	Bearing Code	Weight Each (lb)	Catalog No.	Stock No.	A (in)	B (in)	C (in)	D (in)	E (in)	F (in)	G (in)	H (in)
15	3/4 - 7/8	16	BB	130	418	108608	32.25	16.12	5.09	8.34	1.76	21.26	1.50	2.93
15	3/4 - 7/8	16	RB	130	418	108626	32.25	16.12	5.09	8.34	1.76	21.26	1.50	2.93
15	7/8 - 1	18	BB	150	418	108644	33.50	18.12	5.09	8.34	1.76	21.51	1.50	2.93
15	7/8 - 1	18	RB	150	418	108662	33.50	18.12	5.09	8.34	1.76	21.51	1.50	2.93
15	3/4 - 7/8	10	BB	63	420	108371	25.25	10.12	5.09	8.34	1.76	17.26	1.50	2.93
15	3/4 - 7/8	10	RB	63	420	108372	25.25	10.12	5.09	8.34	1.76	17.26	1.50	2.93
15	3/4 - 7/8	8	BB	51	420	108275	23.50	8.12	5.09	8.34	1.76	16.51	1.50	2.93
15	3/4 - 7/8	8	RB	51	420	108276	23.50	8.12	5.09	8.34	1.76	16.51	1.50	2.93
20	1 - 1-1/8	8	BB	75	430	120023	25.87	8.12	6.00	9.39	2.00	18.43	1.50	3.38
20	1 - 1-1/8	8	RB	75	430	120041	25.87	8.12	6.00	9.39	2.00	18.43	1.50	3.38
20	1 - 1-1/8	10	BB	89	430	120096	27.94	10.12	6.00	9.39	2.00	19.50	1.50	3.38
20	1 - 1-1/8	10	RB	89	430	120112	27.94	10.12	6.00	9.39	2.00	19.50	1.50	3.38
20	1 - 1-1/8	12	BB	103	430	120176	30.00	12.25	6.00	9.39	2.00	20.50	1.50	3.38
20	1 - 1-1/8	12	RB	103	430	120194	30.00	12.25	6.00	9.39	2.00	20.50	1.50	3.38
20	1 - 1-1/8	14	BB	123	430	120256	32.34	14.00	6.00	9.39	2.00	21.96	1.50	3.38
20	1 - 1-1/8	14	RB	123	430	120274	32.34	14.00	6.00	9.39	2.00	21.96	1.50	3.38
25	1 - 1-1/4	18	BB	240	430	119486	41.41	18.25	7.12	11.76	2.50	27.97	1.94	4.32
25	1 - 1-1/4	18	RB	240	430	119487	41.41	18.25	7.12	11.76	2.50	27.97	1.94	4.32
25	1 - 1-1/4	8	BB	90	434	208896	26.56	8.25	6.13	9.36	2.00	19.06	1.50	3.38
25	1 - 1-1/4	10	BB	107	434	208910	28.63	10.25	6.13	9.36	2.00	20.13	1.50	3.38
30	1 - 1-1/4	20	BB	375	430	119507	52.15	20.25	8.31	15.24	3.00	36.12	2.25	5.91
30	1 - 1-1/4	20	RB	375	430	119516	52.15	20.25	8.31	15.24	3.00	36.12	2.25	5.91
30	1 - 1-1/4	24	BB	450	430	119525	55.75	24.25	8.31	15.24	3.00	37.75	2.25	5.91
30	1 - 1-1/4	24	RB	450	430	119534	55.75	24.25	8.31	15.24	3.00	37.75	2.25	5.91
30	1 - 1-1/4	12	BB	165	434	208931	36.32	12.25	7.00	11.76	2.50	25.88	1.94	4.32
30	1 - 1-1/4	14	BB	180	434	208932	38.57	14.25	7.00	11.76	2.50	27.13	1.94	4.32

Working Load Limit (t)	Wire Rope Diameter (in)	Sheave Diameter (in)	Bearing Code	Weight Each (lb)	Model No.	Stock No.	A (in)	B (in)	C (in)	D (in)	E (in)	F (in)	G (in)	H (in)
12	3/4 - 7/8	6	BB	15	402	179238	9.87	6.00	4.19	1.80	1.00	5.12	1.62	1.75
12	3/4 - 7/8	6	RB	15	402	179283	9.87	6.00	4.19	1.80	1.00	5.12	1.62	1.75
12	3/4 - 7/8	8	BB	21	402	179318	11.93	8.12	4.19	1.80	1.00	6.12	1.62	1.75
12	3/4 - 7/8	8	RB	21	402	179363	11.93	8.12	4.19	1.80	1.00	6.12	1.62	1.75
12	3/4 - 7/8	10	BB	29	402	179434	14.00	10.12	4.19	1.80	1.00	7.19	1.69	1.75
12	3/4 - 7/8	10	RB	29	402	179498	14.00	10.12	4.19	1.80	1.00	7.19	1.69	1.75
12*	5/8 - 3/4	5.75	BB	29	L-160	599604	9.97	6.00	4.19	1.72	1.00	5.22	1.85	1.75
12*	5/8 - 3/4	5.75	RB	29	L-160	599613	9.97	6.00	4.19	1.72	1.00	5.22	1.85	1.75
2	5/16 - 3/8	3	BB	3	404	102016	4.87	3.00	2.64	1.04	0.50	2.62	0.87	0.75
4	3/8 - 1/2	4.5	BB	7	404	102025	7.75	4.25	3.13	1.56	0.75	4.25	1.63	1.38
8	5/8 - 3/4	6	BB	15	404	102098	9.87	6.00	4.19	1.80	1.00	5.12	1.62	1.75
8	5/8 - 3/4	6	RB	15	404	102114	9.87	6.00	4.19	1.80	1.00	5.12	1.62	1.75
8	5/8 - 3/4	8	BB	21	404	102169	11.93	8.12	4.19	1.80	1.00	6.12	1.62	1.75
8	5/8 - 3/4	8	RB	21	404	102187	11.93	8.12	4.19	1.80	1.00	6.12	1.62	1.75
8	5/8 - 3/4	10	BB	29	404	102230	14.00	10.12	4.19	1.80	1.00	7.19	1.69	1.75
8	5/8 - 3/4	10	RB	29	404	102258	14.00	10.12	4.19	1.80	1.00	7.19	1.69	1.75
8	5/8 - 3/4	12	BB	36	404	102301	16.81	12.12	4.19	1.80	1.00	9.00	2.50	1.75
8	5/8 - 3/4	12	RB	36	404	102329	16.81	12.12	4.19	1.80	1.00	9.00	2.50	1.75
6*	3/8 - 1/2	5	BB	13	L-160	599542	8.25	5.12	3.69	1.53	0.75	4.25	1.38	1.44
6*	3/8 - 1/2	5	RB	13	L-160	599551	8.25	5.12	3.69	1.53	0.75	4.25	1.38	1.44
5	3/8 - 1/2 ‡	4	BB	11	L-170	599846	8.38	4.50	2.94	1.57	0.85	4.69	2.25	1.44
5	3/8 - 1/2 ‡	4	RB	11	L-170	599855	8.38	4.50	2.94	1.57	0.85	4.69	2.25	1.44

Working Load Limit (t)	Wire Rope Diameter (in)	Sheave Diameter (in)	Bearing Code	Weight Each (lb)	Model No.	Stock No.	A (in)	B (in)	C (in)	D (in)	E (in)	F (in)	G (in)	H (in)
15	3/4 - 7/8	8	BB	30	406	108311	13.19	8.12	5.13	2.35	1.25	6.75	2.13	2.38
15	3/4 - 7/8	8	RB	30	406	108312	13.19	8.12	5.13	2.35	1.25	6.75	2.13	2.38
15	3/4 - 7/8	10	BB	42	406	108406	14.94	10.12	5.13	2.35	1.25	7.50	1.94	2.38
15	3/4 - 7/8	10	RB	42	406	108407	14.94	10.12	5.13	2.35	1.25	7.50	1.94	2.38
20	1 - 1-1/8	8	BB	42	407	103523	13.56	8.12	6.00	2.55	1.50	7.12	2.37	2.38
20	1 - 1-1/8	8	RB	42	407	103541	13.56	8.12	6.00	2.55	1.50	7.12	2.37	2.38
20	1 - 1-1/8	10	BB	55	407	103603	15.63	10.12	6.00	2.55	1.50	8.19	2.44	2.38
20	1 - 1-1/8	10	RB	55	407	103621	15.63	10.12	6.00	2.55	1.50	8.19	2.44	2.38
20	1 - 1-1/8	12	BB	70	407	103685	17.75	12.25	6.00	2.55	1.50	9.25	2.56	2.38
20	1 - 1-1/8	12	RB	70	407	103701	17.75	12.25	6.00	2.55	1.50	9.25	2.56	2.38
20	1 - 1-1/8	14	BB	90	407	103765	20.10	14.00	6.00	2.55	1.50	10.72	2.97	2.38
20	1 - 1-1/8	14	RB	90	407	103783	20.10	14.00	6.00	2.55	1.50	10.72	2.97	2.38
25	1 - 1-1/4	8	BB	50	401	178151	13.49	8.25	6.13	2.55	1.50	7.12	2.37	2.25
25	1 - 1-1/4	10	BB	65	401	179167	15.43	10.25	6.13	2.55	1.50	8.19	2.44	2.12
25	1 - 1-1/4	18	BB	165	407	119652	24.62	18.25	7.12	3.05	1.75	13.00	3.13	2.5
25	1 - 1-1/4	18	RB	165	407	119653	24.62	18.25	7.12	3.05	1.75	13.00	3.13	2.5
30	1 - 1-1/4	12	BB	95	401	179178	18.62	12.25	7.00	3.05	1.75	10.00	3.13	2.5
30	1 - 1-1/4	14	BB	110	401	179187	20.88	14.25	7.00	3.05	1.75	11.25	3.38	2.5
30	1 - 1-1/4	20	BB	215	407	119669	28.88	20.25	8.31	3.55	2.25	15.25	4.13	3.5
30	1 - 1-1/4	20	RB	215	407	119678	28.88	20.25	8.31	3.55	2.25	15.25	4.13	3.5
30	1 - 1-1/4	24	BB	290	407	119687	32.50	24.25	8.31	3.55	2.25	16.88	3.76	3.5
30	1 - 1-1/4	24	RB	290	407	119696	32.50	24.25	8.31	3.55	2.25	16.88	3.76	3.5
60	1 - 1-1/4	12	BB	95	401	8027292	20.32	12.12	8.66	2.78	2.50	10.75	3.50	3.5

Working Load Limit (t)	Wire Rope Diameter (in)	Sheave Diameter (in)	Bearing Code	Weight Each (lb)	Stock No.	A (in)	B (in)	C (in)	D (in)	E (in)	F (in)	G (in)	H (in)	I (in)
4	3/8 - 1/2	4.5	BB	18	104023	14.77	4.24	5.25	5.24	1.00	10.78	0.94	1.87	1.72
12	5/8 - 3/4	6	BB	45	104103	21.12	6.00	6.13	7.86	1.56	15.50	1.44	2.62	2.03
12	5/8 - 3/4	8	BB	53	104185	23.18	8.12	6.13	7.86	1.56	16.50	1.44	2.62	2.03
12	5/8 - 3/4	6	RB	45	104121	21.12	6.00	6.13	7.86	1.56	15.50	1.44	2.62	2.03
12	5/8 - 3/4	8	RB	53	104201	23.18	8.12	6.13	7.86	1.56	16.50	1.44	2.62	2.03

Working Load Limit (t)	Wire Rope Diameter (in)	Sheave Diameter (in)	Bearing Code	Weight Each (lb)	Stock No.	A (in)	B (in)	C (in)	D (in)	E (in)	F (in)	G (in)	H (in)
4	3/8 - 1/2	4.5	BB	18	105022	14.03	4.24	5.25	11.22	0.62	1.70	2.01	1.72
12	5/8 - 3/4	6	RB	50	105120	21.12	6.00	6.13	16.36	1.50	3.12	3.12	2.03
12	5/8 - 3/4	6	BB	50	105102	21.12	6.00	6.13	16.36	1.50	3.12	3.12	2.03
12	5/8 - 3/4	8	BB	58	105184	23.17	8.12	6.13	17.36	1.50	3.12	3.12	2.03
12	5/8 - 3/4	8	RB	58	105200	23.17	8.12	6.13	17.36	1.50	3.12	3.12	2.03

Working Load Limit (t)	Sheave Diameter (in)	Wire Rope Diameter (in)	With Swivel Shackle TU-481 Stock No.	With Swivel Shackle TU-481 Weight Each (lb)
30	16	1 - 1-1/4	2108327	235
30	16	1-1/4 - 1-1/2	2108351	235
30	20	1 - 1-1/4	2108387	250
30	20	1-1/4 - 1-1/2	2108411	250
60	18	1 - 1-1/4	2108453	390
60	18	1-1/4 - 1-1/2	2108483	390
60	24	1 - 1-1/4	2108528	450
60	24	1-1/4 - 1-1/2	2108558	450
60	24	1-1/2 - 1-3/4	2108588	450
60	24	1-3/4 - 2	2108618	450
60	24	2 - 2-1/4	2108633	450

McKissick® UB-500 Model No.	Stock No.	A (in)	B (in)	C (in)	D (in)	E (in)	F (in)	H (in)	I (in)	J (in)	AA (in)
MB4T35E	1036000*	20.09	17.27	7.50	1.36	1.44	1.12	1.38	.88	1.31	2.5
MB4T85E	1036009*	20.98	18.16	9.25	1.36	1.44	1.12	1.38	.88	1.31	2.5
MB4T150E	1036027*	21.98	19.16	11.25	1.36	1.44	1.12	1.38	.88	1.31	2.5
MB4T200E	1036036*	22.35	19.53	12.50	1.36	1.44	1.12	1.38	.88	1.31	2.5
MB7T85E	1036045*	23.18	20.36	9.25	1.61	1.81	1.38	1.38	.88	1.31	3.0
MB7T150E	1036054*	24.56	21.36	11.25	1.61	1.81	1.38	1.38	.88	1.31	3.0
MB7T200E	1036072*	24.89	21.71	12.50	1.61	1.81	1.38	1.38	.88	1.31	3.0
MB7T285E	1036081*	25.86	22.67	13.88	1.61	1.81	1.38	1.38	.88	1.31	3.0
MB10T150E	1036090*	31.44	27.19	11.25	2.08	2.25	1.62	2.00	1.25	1.78	4.0
MB10T200E	1036099*	31.81	27.56	12.50	2.08	2.25	1.62	2.00	1.25	1.78	4.0
MB10T285E	1036117*	32.75	28.50	13.88	2.08	2.25	1.62	2.00	1.25	1.78	4.0
MB10T350E	1036126*	33.31	29.06	15.00	2.08	2.25	1.62	2.00	1.25	1.78	4.0
MB10T650E	1036135*	34.79	30.54	17.94	2.08	2.25	1.62	2.00	1.25	1.78	4.0
MB12T150E	1036144*	31.44	27.19	11.25	2.08	2.25	1.62	2.00	1.25	1.78	4.0
MB12T200E	1036153*	31.81	27.56	12.50	2.08	2.25	1.62	2.00	1.25	1.78	4.0
MB12T285E	1036171*	32.75	28.50	13.88	2.08	2.25	1.62	2.00	1.25	1.78	4.0
MB12T350E	1036180*	33.31	29.06	15.00	2.08	2.25	1.62	2.00	1.25	1.78	4.0
MB12T650E	1036189*	35.79	30.54	17.94	2.08	2.25	1.62	2.00	1.25	1.78	4.0
MB15T200E	1036198*	37.59	32.59	12.50	3.02	3.00	2.38	2.00	1.25	1.78	5.0
MB15T350E	1036207*	38.81	33.81	15.00	3.02	3.00	2.38	2.00	1.25	1.78	5.0
MB15T650E	1036216*	40.22	35.22	17.94	3.02	3.00	2.38	2.00	1.25	1.78	5.0
MB15T1150E	1036225*	42.22	37.22	21.62	3.02	3.00	2.38	2.00	1.25	1.78	5.0
MB20T200E	1036234*	37.59	32.59	12.50	3.02	3.00	2.38	2.00	1.25	1.78	5.0
MB20T350E	1036243*	38.81	33.81	15.00	3.02	3.00	2.38	2.00	1.25	1.78	5.0
MB20T650E	1036252*	40.22	35.22	17.94	3.02	3.00	2.38	2.00	1.25	1.78	5.0
MB20T1150E	1036261*	42.22	37.22	21.62	3.02	3.00	2.38	2.00	1.25	1.78	5.0
MB25T350E	1036270	47.18	40.18	15.00	3.00	3.62	3.00	2.75	1.75	1.78	6.5
MB25T650E	1036279	49.12	42.75	17.94	3.00	3.62	3.00	2.75	1.75	1.78	6.5
MB25T1150E	1036288	51.06	44.69	21.62	3.00	3.62	3.00	2.75	1.75	1.78	6.5
MB30T650E	1036297	49.12	42.75	17.94	3.00	3.62	3.00	2.75	1.75	1.78	6.5
MB30T1150E	1036306	51.06	44.69	21.62	3.00	3.62	3.00	2.75	1.75	1.78	6.5

Model No.	UB-500 "S" Stock No.	A (in)	B (in)	C (in)	D (in)	E (in)	F (in)	G (in)	H (in)	I (in)	J (in)
MB4T35S	1036005	20.66	18.18	7.50	1.83	1.15	.94	1.88	1.38	.88	1.31
MB4T85S	1036018	21.55	19.05	9.25	1.83	1.15	.94	1.88	1.38	.88	1.31
MB4T150S	1036032	22.55	20.05	11.25	1.83	1.15	.94	1.88	1.38	.88	1.31
MB4T200S	1036041	22.92	20.42	12.50	1.83	1.15	.94	1.88	1.38	.88	1.31
MB7T85S	1036050	23.90	21.30	9.25	2.11	1.66	1.16	1.88	1.38	.88	1.31
MB7T150S	1036063	25.28	22.30	11.25	2.11	1.66	1.16	1.88	1.38	.88	1.31
MB7T200S	1036077	25.61	22.65	12.50	2.11	1.66	1.16	1.88	1.38	.88	1.31
MB7T285S	1036086	26.58	23.61	13.88	2.11	1.66	1.16	1.88	1.38	.88	1.31
MB10T150S	1036095	31.24	27.19	11.25	2.49	2.06	1.50	2.75	2.00	1.25	1.78
MB10T200S	1036108	31.61	27.56	12.50	2.49	2.06	1.50	2.75	2.00	1.25	1.78
MB10T285S	1036122	32.55	28.50	13.88	2.49	2.06	1.50	2.75	2.00	1.25	1.78
MB10T350S	1036131	33.11	29.06	15.00	2.49	2.06	1.50	2.75	2.00	1.25	1.78
MB10T650S	1036140	34.59	30.54	17.94	2.49	2.06	1.50	2.75	2.00	1.25	1.78

Sheave Size (in)	E-566 Stock No.	J-566 Stock No.	For QG & QK configuration, add this shackle PN to your E & J Block	Single Line Pull (short Tons)	Wire Rope Diameter (in)	Weight Each (lb)
12	775003	775209	1019597	5	3/4	95
14	775058	775254	1019631	10	3/4	100
14	775067	775263	1019631	10	1	100
16	776609	776672	1019631	10	3/4	130
16	752956	752965	1019631	10	1	130

Figure No.	Stock No.	Sheave Diameter (in)	Wire Rope Diameter (in)	Weight Each (lb)	A (in)	B (in)	C (in)	D (in)
461-18	239753	18	7/8	500	12.00	20.00	11.00	1.50
461-24	131574	24	1-1/4	500	15.00	26.00	14.00	1.50
461-26	238120	26	1-1/2	660	16.00	28.00	15.00	1.50
461-36	148389	36	1-5/8	850	20.00	36.00	19.50	2.00
461-40	136285	40	2	2006	23.00	42.00	22.50	2.00
461-42	130753	42	2-1/2	4000	28.00	52.00	25.50	2.50
463-26	4440359	26	1	988	33.00	33.00	3.75	1.50
463-30	1404377	30	1-1/4	1225	37.00	37.00	3.50	1.50
463-36	146522	36	1-1/2	1900	43.00	43.00	3.50	1.50
463-42	1406525	42	1-3/4	2975	50.00	50.00	4.38	2.00
463-48	131583	48	2	3600	55.00	55.00	4.63	2.00
463-60	123164	60	2-1/2	6400	68.00	68.00	5.75	2.00

Block Size (in)	Fitting	Stock No.	Sheave Diameter	Manila Rope Size (in)	WLL 1 (lb)	Weight Each (lb)
4	HS	605438	2.25	1/2	1800	4.00
5	HS	605456	3.00	5/8	2400	6.50
6	HS	605474	3.50	3/4	3200	11.50
8	HS	605517	4.75	7/8 - 1	4800	21.50
4	N	607230	2.25	1/2	1800	4.00
5	N	607258	3.00	5/8	2400	6.50
6	N	607276	3.50	3/4	3200	11.50
8	N	607310	4.75	7/8 - 1	4800	21.50
4	S	613232	2.25	1/2	1800	4.00
5	S	613250	3.00	5/8	2400	6.50
6	S	613278	3.50	3/4	3200	11.50
8	S	613312	4.75	7/8 - 1	4800	21.50

Block Size (in)	Fitting	Wood Shell 385-B Stock No. S.C.	Wood Shell 385-B Stock No. Galv.	Steel Shell 390-B Stock No. S.C.	Steel Shell 390-B Stock No. Galv.	Sheave Diameter (in)	Manila Rope Size (in)	Working Load Limit (Tons)	Weight Each (lb)
6	T	702000	702108	702216	702324	3.00	3/4 - 7/8	2	7
8	T	702009	702117	702225	702333	4.00	1 - 1-1/8	4	13
10	T	702018	702126	702234	702342	6.00	1-1/4	8	28
12	T	702027	702135	702243	702351	8.00	1-1/2	8	34
6	J	702036	702144	702252	702360	3.00	3/4 - 7/8	2	7
8	J	702045	702153	702261	702369	4.00	1 - 1-1/8	4	13
10	J	702054	702162	702270	702378	6.00	1-1/4	8	28
12	J	702063	702171	702279	702387	8.00	1-1/2	8	34
6	G	702072	702180	702288	702396	3.00	3/4 - 7/8	2	7
8	G	702081	702189	702297	702405	4.00	1 - 1-1/8	4	13
10	G	702090	702198	702306	702414	6.00	1-1/4	8	28
12	G	702099	702207	702315	702423	8.00	1-1/2	8	34

McKissick® UB-500 Model No.	Stock No.	A (in)	B (in)	C (in)	D (in)	E (in)	F (in)	H (in)	I (in)	J (in)	AA (in)
MB4NS35E	1036402	20.09	17.27	7.5	1.36	1.44	1.12	1.38	0.75	1.31	2.5
MB4NS85E	1036411	20.98	18.16	9.25	1.36	1.44	1.12	1.38	0.75	1.31	2.5
MB4NS150E	1036420	21.98	19.16	11.25	1.36	1.44	1.12	1.38	0.75	1.31	2.5
MB4NS200E	1036429	22.35	19.53	12.5	1.36	1.44	1.12	1.38	0.75	1.31	2.5
MB7NS85E	1036438	23.18	20.36	9.25	1.61	1.81	1.38	1.38	0.75	1.31	3.0
MB7NS150E	1036447	24.56	21.36	11.25	1.61	1.81	1.38	1.38	0.75	1.31	3.0
MB7NS200E	1036456	24.89	21.71	12.5	1.61	1.81	1.38	1.38	0.75	1.31	3.0
MB7NS285E	1036465	25.86	22.67	13.88	1.61	1.81	1.38	1.38	0.75	1.31	3.0
MB10NS150E	1036474	31.44	27.19	11.25	2.08	2.25	1.62	2.00	1.25	1.78	4.0
MB10NS200E	1036483	31.81	27.56	12.5	2.08	2.25	1.62	2.00	1.25	1.78	4.0
MB10NS285E	1036492	32.75	28.5	13.88	2.08	2.25	1.62	2.00	1.25	1.78	4.0
MB10NS350E	1036501	33.31	29.06	15.00	2.08	2.25	1.62	2.00	1.25	1.78	4.0
MB10NS650E	1036510	34.79	30.54	17.94	2.08	2.25	1.62	2.00	1.25	1.78	4.0
MB12NS150E	1036519	31.44	27.19	11.25	2.08	2.25	1.62	2.00	1.25	1.78	4.0
MB12NS200E	1036528	31.81	27.56	12.5	2.08	2.25	1.62	2.00	1.25	1.78	4.0
MB12NS285E	1036537	32.75	28.5	13.88	2.08	2.25	1.62	2.00	1.25	1.78	4.0
MB12NS350E	1036546	33.31	29.06	15.00	2.08	2.25	1.62	2.00	1.25	1.78	4.0
MB12NS650E	1036555	35.79	30.54	17.94	2.08	2.25	1.62	2.00	1.25	1.78	4.0
MB15NS200E	1036564	37.59	32.59	12.5	3.02	3.00	2.38	2.00	1.25	1.78	5.0
MB15NS350E	1036573	38.81	33.81	15.00	3.02	3.00	2.38	2.00	1.25	1.78	5.0
MB15NS650E	1036582	40.22	35.22	17.94	3.02	3.00	2.38	2.00	1.25	1.78	5.0
MB15NS1150E	1036591	42.22	37.22	21.62	3.02	3.00	2.38	2.00	1.25	1.78	5.0

Model No.	Stock No.	A (in)	B (in)	C (in)	D (in)	E (in)	F (in)	H (in)	I (in)	J (in)
MB4NS35S	1036407	20.66	18.18	7.5	1.83	1.15	0.94	1.38	0.75	1.31
MB4NS85S	1036416	21.55	19.05	9.25	1.83	1.15	0.94	1.38	0.75	1.31
MB4NS150S	1036425	22.55	20.05	11.25	1.83	1.15	0.94	1.38	0.75	1.31
MB4NS200S	1036434	22.92	20.42	12.5	1.83	1.15	0.94	1.38	0.75	1.31
MB7NS85S	1036443	23.9	21.3	9.25	2.11	1.66	1.16	1.38	0.75	1.31
MB7NS150S	1036452	25.28	22.3	11.25	2.11	1.66	1.16	1.38	0.75	1.31
MB7NS200S	1036461	25.61	22.65	12.5	2.11	1.66	1.16	1.38	0.75	1.31
MB7NS285S	1036470	26.58	23.61	13.88	2.11	1.66	1.16	1.38	0.75	1.31
MB10NS150S	1036479	31.24	27.19	11.25	2.49	2.06	1.5	2.00	1.25	1.78
MB10NS200S	1036488	31.61	27.56	12.5	2.49	2.06	1.5	2.00	1.25	1.78
MB10NS285S	1036497	32.55	28.5	13.88	2.49	2.06	1.5	2.00	1.25	1.78
MB10NS350S	1036506	33.11	29.06	15.00	2.49	2.06	1.5	2.00	1.25	1.78
MB10NS650S	1036511	34.59	30.54	17.94	2.49	2.06	1.5	2.00	1.25	1.78

Stock No.	Model No.	Working Load Limit (short Tons)	Weight Each (lb)	A (in)	B (in)	C (in)	D (in)	E (in)	F (in)	G (in)	H (in)	J (in)
1036621	MB04BT085E	4	113	8.88	21.00	1.44	1.31	1.36	1.12	2.75	2.28	1.12
1036649	MB04BT150E	4	178	10.56	22.72	1.44	1.31	1.36	1.12	2.75	2.28	1.12
1036667	MB04BT200E	4	232	11.62	23.72	1.44	1.31	1.36	1.12	2.75	2.28	1.12
1036685	MB07BT085E	7	113	8.88	22.48	1.81	1.66	1.61	1.12	2.75	2.28	1.12
1036705	MB07BT150E	7	178	10.56	24.20	1.81	1.66	1.61	1.12	2.75	2.28	1.12
1036723	MB07BT200E	7	232	11.62	25.20	1.81	1.66	1.61	1.12	2.75	2.28	1.12

Stock No.	Model No.	Working Load Limit (short Tons)	Weight Each (lb)	A (in)	B (in)	C (in)	D (in)	E (in)	F (in)	G (in)	H (in)	J (in)
1036630	MB04BT085S	4	113	8.88	23.32	1.67	1.16	2.11	1.12	2.75	2.28	1.12
1036658	MB04BT150S	4	178	10.56	25.04	1.67	1.16	2.11	1.12	2.75	2.28	1.12
1036676	MB04BT200S	4	232	11.62	26.04	1.67	1.16	2.11	1.12	2.75	2.28	1.12
1036694	MB07BT085S	7	113	8.88	23.32	1.67	1.16	2.11	1.12	2.75	2.28	1.12
1036714	MB07BT150S	7	178	10.56	25.04	1.67	1.16	2.11	1.12	2.75	2.28	1.12
1036732	MB07BT200S	7	232	11.62	26.04	1.67	1.16	2.11	1.12	2.75	2.28	1.12

Stock No.	Working Load Limit (short Tons)	Wire Rope Diameter (in)	A (in)	B (in)	C (in)	D (in)	E (in)	F (in)	G (in)	H (in)	I (in)	J (in)	K (in)	L (in)
2009806	1.5	.38	4.00	.50	.50	.69	.78	6.28	4.09	1.12	1.22	1.19	1.12	.31
2009807	3.0	.50	5.00	.75	.75	.94	1.19	8.56	4.94	1.34	1.50	1.38	1.44	.38
2003969	5.0	.62	6.88	.88	1.06	1.12	1.56	10.81	6.50	1.69	1.88	1.75	1.81	.56
2009808	8.5	.75	7.00	1.19	1.56	1.34	2.09	13.75	8.69	2.25	2.50	2.56	2.59	.53

Catalog No.	Stock No.	Wire Rope Diameter (in)	Weight Each (lb)	Ball Diameter A (in)
SHB - 15	2003822	1/4-5/16	15	5.06
SHB - 20	2003830	3/8	20	5.38
SHB - 50	2003831	1/2 - 5/8	50	7.12
SHB - 100	2003832	5/8 - 3/4 - 7/8	100	9.19

Working Load Limit (t)	Sheave Diameter (in)	Wire Rope Diameter (in)	M-491 Stock No. Painted	G-491 Stock No. Galvanized	Weight Each (lb)
3	6	3/8 - 1/2	2020129	-	25
4	8	3/8 - 1/2	2020161	2020170	35
8	10	3/8 - 1/2	2020806	2020815	55
8	10	1/2 - 9/16	2020824	2020833	55
12	10	1/2 - 9/16	2021118	2021127	55
12	14	1/2 - 5/8	2021136	2021145	95
12	14	5/8 - 3/4	2021154	2021163	95
15	16	3/4 - 7/8	2021172	2021181	150
15	16	7/8 - 1	2021190	2021199	150
25	18	1 - 1 1/8	2032312	2032315	350
30	20	1 1/8 - 1 1/4	2032321	2032324	675

Model No.	No. of Sheaves	Stock No.	Working Load Limit (short Tons)	Sheave Diameter (in)	Wire Rope Diameter (in)	Weight Each (lb)
458	1	171619	5	6	1/2	21
458H	1	239067	8	6	9/16 - 5/8	25
459	2	171637	10	6	1/2	28
459H	2	239076	12	6	9/16 - 5/8	31

Sheave Diameter (in)	Model No.	Hay Fork Pulleys Stock No. Painted	Hay Fork Pulleys Stock No. Zinc Plated	Working Load Limit (short tons)	Wire Rope Diameter (in)	Rope Type	End Fitting	Weight Each (lb)
4.5	HF-1	170022	170594	1	1-1/4	Natural Rope	Swivel Hook	6
4.5	HF-2	170086	170629	1	1-1/4	Natural Rope	Swivel Eye	6
4.5	HF-3	170148	170656	1	1/2	Wire Rope	Swivel Hook	6
4.5	HF-4	170200	170683	1	1/2	Wire Rope	Swivel Eye	6

Block Size (in)	Fitting	Stock No.	Sheave Diameter	Manila Rope Size (in)	WLL 1 (lb)	Weight Each (lb)
4	HS	603831	2.25	1/2	1000	1.75
5	HS	603859	3.00	5/8	1200	3.25
6	HS	603877	3.50	3/4	1800	5.00
8	HS	603911	4.75	7/8 - 1	2800	13.00
4	N	606437	2.25	1/2	1000	1.75
5	N	606455	3.00	5/8	1200	3.25
6	N	606473	3.50	3/4	1800	5.00
8	N	606516	4.75	7/8 - 1	2800	13.00
4	S	610039	2.25	1/2	1000	1.75
5	S	610057	3.00	5/8	1200	3.25
6	S	610075	3.50	3/4	1800	5.00
8	S	610119	4.75	7/8 - 1	2800	13.00

Blocks & sheaves

A snatch block sees up to twice what the rope is pulling

Sheave diameter is rope life

BB or RB

The footnotes are part of the rating

Snatch blocks

Snatch Block, Shackle Fitting, Single Sheave, 2–12 t

Snatch Block, Shackle Fitting, Single Sheave, 15–60 t

Snatch Block, Hook Fitting, Single Sheave, 2–12 t

Snatch Block, Hook Fitting, Single Sheave, 15–30 t

Snatch Block, Tail Board, Single Sheave, 2–12 t

Snatch Block, Tail Board, Single Sheave, 15–60 t

408 Double Sheave Snatch Block with Hook

409 Double Sheave Snatch Block with Shackle

TU-481 Tilt-Up Snatch Block with Swivel Shackle

Crane hook blocks

380 Series Hook Blocks

380 Series Easy Reeve Hook Blocks

680 Construction Blocks

Overhaul balls

UB-500E Top Swivel Overhaul Balls, 320 Eye Hook

UB-500S Top Swivel Overhaul Balls, Shur-Loc Hook

UB-500NS Non-Swivel Overhaul Balls, 320N Eye Hook

UB-500NS Non-Swivel Overhaul Balls, Shur-Loc Hook

UB-550E Top Swivel Overhaul Balls, Eye Hook

UB-550S Top Swivel Overhaul Balls, Shur-Loc Eye Hook

Angular Contact Bearing Swivel Overhaul Balls

Split Overhaul Ball

Wire rope utility blocks

566 Hoisting Blocks

M-491 / G-491 Tower & Derrick Hoist Blocks

Guy Line Blocks

461 Vertical & 463 Horizontal Lead Blocks

HF-1 / HF-2 Hay Fork Pulleys

Manila rope blocks

HS-21B Single Sheave Wood Blocks

HS-22B Double Sheave Wood Blocks

HS-23B Triple Sheave Wood Blocks

P-301B Single Sheave Steel Shell Blocks

P-302B Double Sheave Steel Shell Blocks

P-303B Triple Sheave Steel Shell Blocks

385B / 390B Blocks

T-350R Blocks

Oilfield blocks

171 Tong Block

443 Lay Down Block

70 Series Tubing Blocks

80 Series Tubing Blocks

Crown Blocks

Sheaves

Q-681-Z / Q-682-Z / Q-683-Z Bronze Bushed Steel Sheaves

Plain Bore Sheaves

Common Bore Sheaves

Bronze Bushed Sheaves

Roller Bearing Sheaves

Tapered Bearing Sheaves

Plain Bore Oilfield Sheaves for Tapered Bearings

Worn grooves wreck rope

What we need to spec a hook block

Other rigging hardware

Need a block for a specific pull?

Block Size (in)	Fitting	Stock No.	Sheave Diameter	Manila Rope Size (in)	WLL 1 (lb)	Weight Each (lb)
4	HS	604634	2.25	1/2	1400	3.00
5	HS	604652	3.00	5/8	1800	5.60
6	HS	604670	3.50	3/4	2400	8.50
8	HS	604714	4.75	7/8 - 1	3800	14.00
4	N	606838	2.25	1/2	1400	3.00
5	N	606856	3.00	5/8	1800	5.60
6	N	606874	3.50	3/4	2400	8.50
8	N	606918	4.75	7/8 - 1	3800	14.00
4	S	611635	2.25	1/2	1400	3.00
5	S	611653	3.00	5/8	1800	5.60
6	S	611671	3.50	3/4	2400	8.50
8	S	611715	4.75	7/8 - 1	3800	14.00

Stock No.	Block Size (in)	Fitting	Sheave Diameter	Manila Rope Size (in)	WLL (lb) Single	Weight (lb) Single
682639	4	N	2.25	1/2	1100	2.25
682675	6	N	3.50	3/4	2000	5.50
691111	8	P	4.75	1	3300	10.00

Stock No.	Block Size (in)	Fitting	Sheave Diameter	Manila Rope Size (in)	WLL (lb) Double	Weight (lb) Double
683031	4	N	2.25	1/2	1600	3.75
683077	6	N	3.50	3/4	3300	9.25
692717	8	P	4.75	1	5100	16.50

Stock No.	Block Size (in)	Fitting	Sheave Diameter	Manila Rope Size (in)	WLL (lb) Triple	Weight (lb) Triple
683433	4	N	2.25	1/2	2200	5.00
683479	6	N	3.50	3/4	4000	12.50
694314	8	P	4.75	1	7000	22.00

Block Size (in)	T-350-R	Outside Diam. (in)	Rim Thickness (in)	Bearing Diam. (in)	Manila Rope Size (in)	Working Load Limit (lb)	Weight Each (lb)
8	710207	8.00	1.25	.75	7/8	1000	9.0
10	710225	10.00	1.25	.88	1	1000	9.8
12	710243	12.00	1.38	.88	1	1000	12.7

Sheave Diameter (in)	Stock No.	Working Load Limit (short Tons)	Wire Rope Diameter (lb)	Weight Each (lb)
6	171012	0.5	3/4	11
8	171058	1	3/4	12
10	171101	2.5	3/4	30
12	171156	2.5	3/4	35

Sheave Diameter (in)	Model No.	Stock No.	No. of Sheaves	Working Load Limit (short Tons)	Wire Rope Diameter (in)	Weight Each (lb)
24	241	351158	1	15	7/8	200
24	242	351167	2	30	7/8	278
24	243	351176	3	45	7/8	375
24	731	351185	1	35	1	200
24	732	351194	2	75	1	350
24	733	351201	3	100	1	525
24	734	351210	4	125	1	720
30	741	351229	1	40	1-1/8	325
30	742	351238	2	80	1-1/8	560
30	743	351247	3	110	1-1/8	800
30	744	351256	4	140	1-1/8	982
30	745	351265	5	170	1-1/8	1163

"A" Nominal Outside Diameter (in)	Stock Number	Wire Rope Diameter (in)	"D" Bore Size (in)	Hub Width (in)	Rim Width (in)	"C" Nominal Hub Outside Diameter (in)	"B" Nominal Tread Diameter (in)	Material	Approx. Weight (lb)
3.00	51008	1/4	0.752	1.310	1.25	1.12	2.06	B.S.	1.0
3.00	11310	3/8	0.752	1.310	1.25	1.12	2.06	B.S.	1.0
4.00	51044	1/4	1.569	1.000	0.88	2.00	3.12	B.S.	2.0
4.00	1189	3/8	1.569	1.000	0.88	2.00	3.12	B.S.	2.0
4.88	2026409	5/8	1.749	1.250	1.12	2.25	4.06	F.S.	3.6
6.00	13014	1/2	1.625	1.125	1.00	2.25	4.94	F.S.	4.0
6.00	51124	3/8	1.625	1.125	1.00	2.25	4.94	F.S.	4.0
5.88	2023136	3/4	1.875	1.750	1.62	2.50	4.38	F.S.	6.0
7.00	3203	3/8	1.875	1.375	0.75	2.38	6.25	B.S.	6.2
7.00	51437	1/4	1.875	1.375	0.75	2.38	6.25	B.S.	6.2
8.00	5194	3/4	1.875	1.500	1.38	2.44	6.62	F.S.	7.0
8.00	51598	5/8	1.875	1.500	1.38	2.44	6.62	F.S.	7.0
8.00	61710	1/2	1.848	1.313	1.25	2.44	6.62	F.S.	8.0
9.88	5675	5/8	1.375	1.500	1.38	3.25	8.50	F.S.	9.5
8.00	2023146	5/8	1.875	1.750	1.62	2.56	6.31	F.S.	10.0
8.00	2023152	3/4	1.875	1.750	1.62	2.56	6.31	F.S.	10.0
8.00	2023144	1/2	1.875	1.750	1.62	2.56	6.31	F.S.	10.0
8.50	61747	3/8	1.848	1.313	1.00	2.75	7.50	D.I.	11.0
9.88	6040	1/2	3.000	1.750	1.12	3.75	8.56	B.S.	14.0
9.88	51918	3/8	3.000	1.750	1.12	3.75	8.56	F.S.	14.0

"A" Nominal Outside Diameter (in)	Stock Number	Wire Rope Diameter (in)	"D" Bore Size (in)	Hub Width (in)	Rim Width (in)	"C" Nominal Hub Outside Diameter (in)	"B" Nominal Tread Diameter (in)	Material	Approx. Weight (lb)
3	905042	1/4	0.500	0.500	0.50	1.00	2.62	P.M.	0.8
3	905024	1/4	0.375	0.500	0.50	1.00	2.62	P.M.	0.8
4	905140	5/16	0.625	0.750	0.62	1.38	3.50	P.M.	1.0
3	905051	3/16	0.375	0.781	0.75	1.00	2.38	P.M.	1.0
4	905122	5/16	0.500	0.750	0.62	1.38	3.50	P.M.	1.0
3	905097	3/16	0.625	0.781	0.75	1.00	2.38	P.M.	1.0
3	905079	3/16	0.500	0.781	0.75	1.00	2.38	P.M.	1.0
4	905168	3/8	0.500	0.812	0.75	1.50	3.25	P.M.	1.3
4	905202	3/8	0.750	0.812	0.75	1.50	3.25	P.M.	1.3
4	905220	1/2	0.500	1.062	1.00	1.62	3.18	P.M.	1.5
4	905248	1/2	0.625	1.062	1.00	1.62	3.18	P.M.	1.5
5	905300	3/8	0.750	0.938	0.88	2.25	4.25	P.M.	2.3
5	905293	3/16	0.750	0.938	0.88	2.25	4.25	P.M.	2.3
5	905328	1/2	0.625	1.062	1.00	2.25	4.00	P.M.	2.5
6	905462	3/8	0.750	0.812	0.75	1.88	5.00	P.M.	2.5
6	905426	3/8	0.500	0.812	0.75	1.88	5.00	D.I.	2.5
6	905480	3/8	0.500	1.062	1.00	1.88	5.00	D.I.	2.5
6	905523	3/8	0.750	1.062	1.00	18.80	5.00	P.M.	4.2
8	905747	1/2	0.750	1.125	1.00	2.38	6.88	D.I.	5.0
6.75	905701	3/8	0.750	1.188	1.12	2.00	5.88	D.I.	5.0
8	905809	5/8	0.750	1.375	1.25	2.00	6.50	D.I.	6.0
8	905845	5/8	1.000	1.375	1.25	2.00	6.50	D.I.	6.8
8	909324	5/8	1.000	1.375	1.25	2.50	6.62	D.I.	8.5
8	909342	5/8	1.125	1.375	1.25	2.50	6.62	D.I.	8.5
8	909388	5/8	1.500	1.375	1.25	2.50	6.62	D.I.	8.5
8	905783	1/2	1.000	1.125	1.00	2.38	6.88	D.I.	8.5
8	909360	5/8	1.250	1.375	1.25	2.50	6.62	D.I.	8.5
10	906005	5/8	1.000	1.375	1.25	3.00	8.50	D.I.	9.3
10	905943	1/2	1.000	1.125	1.00	2.88	8.75	D.I.	10.0
10	909761	5/8	1.500	1.375	1.25	3.00	8.50	D.I.	13.5
12	906041	1/2	1.000	1.125	1.00	4.00	10.62	D.I.	16.5
12	906087	1/2	1.250	1.125	1.00	4.00	10.62	D.I.	16.5
12	906247	7/8	1.500	2.000	1.75	3.75	10.00	D.I.	20.3
14	*906283	3/4	1.125	1.625	1.50	3.25	12.25	C.I.	26.5
14	*906309	3/4	1.250	1.625	1.50	3.25	12.25	C.I.	26.5
18	910820	1	2.000	2.000	1.88	4.00	14.88	R.F.	62.0

"A" Nominal Outside Diameter (in)	Stock Number	Wire Rope Diameter (in)	"D" Shaft Size (in)	Hub Width (in)	Rim Width (in)	"C" Nominal Hub Outside Diameter (in)	"B" Nominal Tread Diameter (in)	Material	Approx. Weight (lb)
2.25	907004	1/4	0.375	0.625	0.56	0.75	1.88	B.S.	0.8
3.00	907040	1/4	0.500	0.500	0.50	1.00	2.62	P.M.	0.8
3.00	907022	1/4	0.375	0.500	0.50	1.00	2.62	P.M.	0.8
3.00	907086	3/8	0.500	0.750	0.75	1.00	2.38	P.M.	1.0
3.00	907077	3/16	0.500	0.781	0.75	1.00	2.38	P.M.	1.0
4.00	907139	3/16	0.625	0.750	0.62	1.38	3.50	P.M.	1.0
3.00	916110	3/8	0.500	0.781	0.75	1.50	2.38	B.S.	1.0
3.00	460156	3/8	0.500	1.313	1.18	1.12	2.06	B.S.	1.0
4.00	907111	3/16	0.500	0.750	0.62	1.38	3.50	P.M.	1.0
4.00	907120	5/16	0.500	0.750	0.62	1.38	3.50	P.M.	1.0
3.00	907095	3/16	0.625	0.781	0.75	1.00	2.38	P.M.	1.0
4.00	907148	5/16	0.625	0.750	0.62	1.38	3.50	P.M.	1.0
3.00	907102	3/8	0.625	0.750	0.75	1.00	2.38	P.M.	1.0
4.00	907200	3/8	0.750	0.812	0.75	1.50	3.25	P.M.	1.3
4.00	907166	3/8	0.500	0.812	0.75	1.50	3.25	P.M.	1.3
4.00	907184	3/8	0.625	0.812	0.75	1.50	3.25	P.M.	1.4
4.00	916147	1/4	0.500	0.812	0.75	2.00	3.25	B.S.	1.5
4.00	907246	1/2	0.625	1.062	1.00	1.62	3.18	P.M.	1.5
4.00	907264	1/2	0.750	1.062	1.00	1.62	3.18	P.M.	1.5
4.00	916156	3/8	0.500	0.812	0.75	2.00	3.25	B.S.	1.5