Harken Big Boat Blocks Technical Info

57mm • 75mm • 100mm • 125mm • 150mm • Runner Blocks
Harken 55mm Big Blocks

Part Nº	Description	Length		Weight w/shackle		Maximum Working Load		Breaking Load
		in	mm	oz	g	lb	kg	lb	kg
1950	Single/swivel/low-load	4 11/16	119	5.0	142	1655	750	3310	1500
1951	Single/swivel/low-load/becket	5 1/2	140	5.5	155	1655	750	3310	1500
1952	Double/swivel/low-load	5 3/16	132	10.1	286	2755	1250	5510	2500
1954	Triple/swivel	5 3/16	132	13.2	375	4850	2200	9700	4400
1958	Single/swivel/high-load	4 11/16	119	5.0	142	2500	1134	5000	2268
1959	Single/swivel/high-load/becket	5 1/2	140	5.5	155	2500	1134	5000	2268
1960	Double/swivel/high-load	5 3/16	132	10.1	286	3600	1633	7200	3267
1961	Double/swivel/high-load/becket	6	152	10.6	302	3600	1633	7200	3267
1965	Stand-up/high-load*	4 1/2	114	7.4	210	2500	1134	5000	2268
3195	Single loop block**	3	76	3.25	92	2500	1134	5000	2268
Use for: Sheets, Halyards, Running backstays and Control lines.						order here

* Includes padeye 1/4" (6 mm) fastener circle: 1 15/32" (37 mm).
** Loop not included.

Harken 75mm Big Blocks

Use for: Sheets, Halyards, Running backstays and Control lines.						order here
Part Nº	Description	Length		Weight w/shackle		Maximum Working Load		Breaking Load
		in	mm	oz	g	lb	kg	lb	kg
1962	Spriddle/becket	8 7/8	225	16.8	476	5000	2268	10000	4536
1969	Single/swivel	5 1/8	129	11.5	325	5000	2268	10000	4536
1970	Single/swivel/becket	6 3/16	157	12.4	351	5000	2268	10000	4536
1971	Double/swivel	5 1/4	134	25.7	728	7500	3402	15000	6804
1972	Footblock Single	4 3/8	111	10.2	288	5250	2380	10500	4762
1973	Footblock Double	4 3/8	111	18	508	3465	1572	6930	3143
1974	Stand-up*	5 15/16	151	15.5	440	5000	2268	10000	4536
1975	Spriddle	7 13/16	199	15.9	452	5000	2268	10000	4536
3005	Footblock Single/lockoff*	4 3/8	111	11.7	333	5250	2380	10500	4762
3006	Footblock Double/lockoff*	4 3/8	111	20.7	586	3465	1572	6930	3143
3046	Mastcollar/low-load	4 7/16	113	8.5	240	3000	1361	6000	2721
3047	Padeye	4 7/8	113	9	250	5000	2268	10000	4535
3088	Straphead spriddle	7 3/32	180	12.8	362	5000	2268	10000	4536
3090	Single/swivel/low-load	5 1/8	129	11.5	325	3000	1361	6000	2722
3095	Double/straphead	4 11/16	119	19.2	545	7500	3402	15000	6804
3196	Single Loop block**	3 15/16	100	7.27**	206	5000	2268	10000	4536

* Includes padeye. Uses hole spacing and base dimensions of 627 padeye. Maximum working load decreases at varying angles.
** Loop not included.

Harken 100mm Big Blocks

Use for: Sheets, Halyards, Running backstays and Control lines.						order here
Part Nº	Description	Length		Weight w/shackle		Maximum Working Load		Breaking Load
		in	mm	oz	g	lb	kg	lb	kg
1993	Spriddle	11 11/16	297	26.5	752	7500	3402	15000	6804
3007	Single/swivel	8	203	20.1	570	7500	3402	15000	6804
3008	Single/swivel/becket	9 1/2	241	22.6	641	7500	3402	15000	6804
3009	Double/swivel	8 15/16	227	48.3	1370	11000	4990	22000	9979
3010	Single Foot Block	5 5/8	143	20.6	584	7500	3402	15000	6804
3011	Double Foot Block	5 5/8	143	36.2	1025	4950	2250	9900	4500
3012	Stand-up*	7 11/16	195	30.3	859	7500	3402	15000	6804
3089	Straphead spriddle	9 1/4	235	24	680	7500	3402	15000	6804
3199	Single Loop block**	5 1/16	128	13.06	370	7500	3402	15000	6804

* Includes padeye.
** Loop not included.

Harken 125mm Big Blocks

Use for: Sheets, Halyards, Running backstays and Control lines.						order here
Part Nº	Description	Length		Weight w/shackle		Maximum Working Load		Breaking Load
		in	mm	oz	g	lb	kg	lb	kg
3016	Single/swivel	10	254	36.8	1042	11000	4990	22000	9977
3017	Footblock Single	6 15/16	176	35.7	1012	11000	4990	22000	9977
3018	Stand-up*	9 1/16	230	43.9	1246	11000	4990	22000	9977
3019	Runner Single	7 11/16	195	195	29	11000	4990	22000	9980
3020	Runner Single/becket	9 1/2	240	32.6	922	11000	4990	22000	9980
3033	Footblock Double	6 15/16	176	62.2	1762	7260	3292	14520	6585
3201	Single Loop block**	6	123	23.20**	658**	11000	4990	22000	9977

* Includes padeye. Uses hole spacing and base dimensions of 648 padeye. Maximum working load decreases at varying angles.
** Loop not included.

Harken 150mm Big Blocks

Use for: Sheets, Halyards, Running backstays and Control lines.						order here
Part Nº	Description	Length		Weight w/shackle		Maximum Working Load		Breaking Load
		in	mm	oz	g	lb	kg	lb	kg
3021	Single/swivel	12	305	61	1730	15000	6802	30000	13605
3022	Stand-up**	2 3/4	71	66	1878	15000	6802	30000	13605
3023	Footblock Single	8 1/16	205	1 7/8	48	15000	6818	30000	13636
3024	Runner Single	8 3/4	221	49.4	1400	15000	6802	30000	13605
3025	Runner Single/becket	10 13/16	275	55.2	1566	15000	6802	30000	13605

** Uses hole spacing and base dimesions of 629 padeye. Maximum working load decreases at varying angles.

Harken Runner Blocks

No tools required for installation. Tangs attach turnbuckles, toggles, and other fittings.								order here
Part Nº	Description	Length		Weight		Clevis Pin		Max. Line		Maximum Working Load		Breaking Load
		in	mm	oz	g	in	mm	in	mm	lb	kg	lb	kg
57mm (2 1/4") - Clevis Pin 3/8" (10mm)
3039	Single	3 3/8	86	4.4	124	3/8	10	1/2	12	2500	1134	5000	2268
75mm (3" ) - Clevis Pin 1/2
1991	Single	4 5/8	118	9.3	264	1/2	12.7	9/16	14	5000	2268	10000	4544
1992	Single/becket	5 3/4	146	10.3	293	1/2	12.7	9/16	14	5000	2268	10000	4544
100mm - Sheave 4"
3013	Single	6 3/16	157	17.5	495	5/8	15.9	5/8	16	7500	3402	15000	6802
3014	Single/becket	7 9/16	193	19.4	550	5/8	15.9	5/8	16	7500	3402	15000	6802
125mm - Sheave 5"
3019	Single	7 11/16	195	29.0	824	3/4	19	3/4	19	11000	4990	22000	9980
3020	Single/becket	9 1/2	240	32.6	922	3/4	19	3/4	19	11000	4990	22000	9980
150mm - Sheave 6"
3024	Single	8 3/4	221	49.4	1400	3/4	19	1	25	15000	6802	30000	13605
3025	Single/becket	10 13/16	275	55.2	1566	3/4	19	1	25	15000	6802	30000	13605

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