Hammer Locks | McMaster-Carr

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Straight-Link Chain Trade Size

Chain Grade

Thickness

Application

Weight Capacity

3,000 lb. to 9,999 lb.

10,000 lb. to 19,999 lb.

20,000 lb. to 29,999 lb.

30,000 lb. or greater

Inside Width

Material

Color

Finish

Duty Rating

Specifications Met

OSHA Compliant 29 CFR 1910.184

Length

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

RoHS

REACH

Performance

Heavy Vibration Resistant

Diameter

Wide End Inside Width

Narrow End Inside Width

108 Products

Removable Figure-Eight Chain Connecting Links—For Lifting

Hammer the pin through the center to assemble these links. They’re also known as hammer locks and sling links. Often used to connect the legs of chain sling to a master link, these links are good for general lifting applications. All meet strict ASME safety standards for lifting.

Note: Connecting links are for vertical lifting only.

For Grade 120 Chain—Links for Grade 120 chain are the strongest links we offer. They are approximately 20% stronger than links for Grade 100 chain and about 35% stronger than links for Grade 80 chain.

For Grade 100 Chain—Links for Grade 100 chain are approximately 20% stronger than links for Grade 80 chain.

For Grade 63 Chain—Links for Grade 63 chain are approximately 60% as strong as links for Grade 80 chain.

2205 Stainless Steel—Stainless steel links better resist corrosion compared to steel links.

Powder-Coated Alloy Steel—Powder-coated alloy steel links have mild corrosion resistance.

	For Straight-Link Chain Trade Size	Thk.	Inside Lg.	Inside Wd.	Wt. Cap., lb.	Fabrication	Specs. Met		Each
For Grade 120 Chain







				Blue Powder-Coated Alloy Steel

				9/32"	29/64"	2 31/64"	13/16"	5,200	Forged	ASME B30.9, OSHA Compliant 29 CFR 1910.184	5514T3	000000


				5/16"	9/16"	2 7/16"	1 1/64"	6,600	Forged	ASME B30.9, OSHA Compliant 29 CFR 1910.184	5514T6	00000
				3/8"	45/64"	3 1/16"	1 9/64"	10,600	Forged	ASME B30.9, OSHA Compliant 29 CFR 1910.184	5514T4	00000
				1/2"	7/8"	4 13/64"	1 19/64"	17,900	Forged	ASME B30.9, OSHA Compliant 29 CFR 1910.184	5514T5	00000
				5/8"	1 1/16"	5 1/32"	2 3/8"	27,500	Forged	ASME B30.9, OSHA Compliant 29 CFR 1910.184	5514T7	000000


				For Grade 100 Chain







								Black Powder-Coated Alloy Steel

								7/32"	5/16"	1 47/64"	35/64"	2,700	Forged	ASME B30.9, ASTM A952, OSHA Compliant 29 CFR 1910.184	33585T91	00000


								9/32"	25/64"	2 3/32"	43/64"	4,300	Forged	ASME B30.9, ASTM A952, OSHA Compliant 29 CFR 1910.184	33585T62	00000
								5/16"	15/32"	2 7/16"	3/4"	5,700	Forged	ASME B30.9, ASTM A952, OSHA Compliant 29 CFR 1910.184	33585T92	00000
								3/8"	19/32"	2 53/64"	15/16"	8,800	Forged	ASME B30.9, ASTM A952, OSHA Compliant 29 CFR 1910.184	33585T64	00000
								1/2"	51/64"	3 15/32"	1 7/64"	15,000	Forged	ASME B30.9, ASTM A952, OSHA Compliant 29 CFR 1910.184	33585T72	00000
								5/8"	15/16"	4 13/32"	1 11/32"	22,600	Forged	ASME B30.9, ASTM A952, OSHA Compliant 29 CFR 1910.184	33585T66	00000
								3/4"	1 17/64"	4 31/32"	1 47/64"	35,300	Forged	ASME B30.9, ASTM A952, OSHA Compliant 29 CFR 1910.184	33585T93	000000
								7/8"	1 11/32"	6 5/16"	2"	42,700	Forged	ASME B30.9, ASTM A952, OSHA Compliant 29 CFR 1910.184	33585T94	000000




										Orange Painted Alloy Steel

										7/32"	5/16"	1 47/64"	35/64"	2,700	Forged	ASME B30.9, ASTM A952, OSHA Compliant 29 CFR 1910.184	33585T81	00000


										9/32"	25/64"	2 3/32"	43/64"	4,300	Forged	ASME B30.9, ASTM A952, OSHA Compliant 29 CFR 1910.184	33585T42	00000
										5/16"	15/32"	2 7/16"	3/4"	5,700	Forged	ASME B30.9, ASTM A952, OSHA Compliant 29 CFR 1910.184	33585T82	00000
										3/8"	19/32"	2 53/64"	15/16"	8,800	Forged	ASME B30.9, ASTM A952, OSHA Compliant 29 CFR 1910.184	33585T44	00000
										1/2"	51/64"	3 15/32"	1 7/64"	15,000	Forged	ASME B30.9, ASTM A952, OSHA Compliant 29 CFR 1910.184	33585T52	00000
										5/8"	15/16"	4 13/32"	1 11/32"	22,600	Forged	ASME B30.9, ASTM A952, OSHA Compliant 29 CFR 1910.184	33585T46	00000
										3/4"	1 17/64"	4 31/32"	1 47/64"	35,300	Forged	ASME B30.9, ASTM A952, OSHA Compliant 29 CFR 1910.184	33585T83	000000
										7/8"	1 27/64"	6 3/16"	2 1/16"	42,700	Forged	ASME B30.9, ASTM A952, OSHA Compliant 29 CFR 1910.184	33585T84	000000


										For Grade 80 Chain







Alloy Steel

7/32"	1/4"													1 13/32"	29/64"	2,100	Forged	ASME B30.9, ASTM A952	3578T13	00000


9/32"	5/16"													1 15/16"	9/16"	3,500	Forged	ASME B30.9, ASTM A952	3578T14	00000
3/8"	1/2"	2 27/64"												13/16"	7,100	Forged	ASME B30.9, ASTM A952	3578T15	00000
1/2"	45/64"	3 33/64"	1 5/32"											12,000	Forged	ASME B30.9, ASTM A952	3578T16	00000
5/8"	13/16"	4 1/16"	1 13/32"											18,100	Forged	ASME B30.9, ASTM A952	3578T17	00000
3/4"	15/16"	4 25/32"	1 23/32"											28,300	Forged	ASME B30.9, ASTM A952	3578T18	00000
7/8"	1 3/64"	5 1/4"	1 57/64"											34,200	Forged	ASME B30.9, ASTM A952	3578T19	000000


For Grade 63 Chain







				2205 Stainless Steel

				3/16"	9/32"									1 7/16"	1/2"	1,300	Forged	ASME B30.9, OSHA Compliant 29 CFR 1910.184	1119N13	00000


				9/32"	3/8"									2 1/8"	11/16"	2,750	Forged	ASME B30.9, OSHA Compliant 29 CFR 1910.184	1119N14	000000
				3/8"	33/64"	2 7/8"								15/16"	5,500	Forged	ASME B30.9, OSHA Compliant 29 CFR 1910.184	1119N11	000000
				1/2"	11/16"	3 5/8"	1 1/8"							9,350	Forged	ASME B30.9, OSHA Compliant 29 CFR 1910.184	1119N24	000000
				5/8"	53/64"	4 1/16"	1 7/16"							13,800	Forged	ASME B30.9, OSHA Compliant 29 CFR 1910.184	1119N12	000000

Removable Figure-Eight Chain Connecting Links—Not for Lifting

Often used with transport chain, these links are good for binding, tying down, and pulling loads. To assemble, hammer the pin through the center. They’re also known as hammer locks.

	Inside Wd.	Wt. Cap., lb.	Fabrication		Each
For Grade 70 Chain







	Zinc-Plated Steel

	1/4"	3/8"	1 13/16"	19/32"	3,100	Forged	7072N11	00000


	5/16"	13/32"	2 1/4"	5/8"	4,700	Forged	7072N12	00000
	3/8"	1/2"	2 21/32"	7/8"	6,600	Forged	7072N13	00000
	1/2"	5/8"	3 13/32"	1"	11,300	Forged	7072N14	00000
	5/8"	3/4"	4 3/32"	1 11/32"	15,800	Forged	7072N15	00000

Nonremovable Figure-Eight Chain Connecting Links—For Lifting

Image of Attribute. Front orientation. Exploded view. Contains Annotated. Chain Connecting Links. Nonremovable Figure-Eight Chain Connecting Links—For Lifting.

Once secured with the included locking pin, these links must be cut off to be removed. Also known as sling links, they’re often used to connect the legs of a chain sling to a master link. All meet strict ASME safety standards for lifting. To assemble, use a ball peen hammer to hammer the pin through the center and then insert the locking pin into the hole.

Note: Connecting links are for vertical lifting only.

For Grade 100 Chain—Links for Grade 100 chain are approximately 20% stronger than links for Grade 80 chain.

Powder-Coated Alloy Steel—Powder-coated alloy steel links have mild corrosion resistance.

	Inside Wd.	Wt. Cap., lb.	Fabrication	Specs. Met		Each
For Grade 100 Chain







	Orange Powder-Coated Alloy Steel

	9/32"	25/64"	2 3/32"	43/64"	4,300	Forged	ASME B30.9, ASTM A952, OSHA Compliant 29 CFR 1910.184	6070T52	000000


	3/8"	19/32"	2 53/64"	15/16"	8,800	Forged	ASME B30.9, ASTM A952, OSHA Compliant 29 CFR 1910.184	6070T53	00000
	1/2"	51/64"	3 15/32"	1 7/64"	15,000	Forged	ASME B30.9, ASTM A952, OSHA Compliant 29 CFR 1910.184	6070T54	00000
	5/8"	53/64"	4 1/16"	1 5/16"	22,600	Forged	ASME B30.9, ASTM A952, OSHA Compliant 29 CFR 1910.184	6070T55	00000

Removable Pear-Shaped Chain Connecting Links—For Lifting

The wide end of these links has more room for attachments than standard figure-eight links. Use them in general lifting applications. All meet strict ASME safety standards for lifting.

Note: Connecting links are for vertical lifting only.

Powder-Coated Alloy Steel—Powder-coated alloy steel links have mild corrosion resistance.

	Narrow End Inside Wd.	Wide End Inside Wd.	Wt. Cap., lb.	Fabrication	Specs. Met		Each
For Grade 80 Chain







	Yellow Powder-Coated Alloy Steel

	9/32", 5/16"	9/16"	5"	19/32"	2"	4,500	Forged	ASME B30.26, ASTM A952	3697T9	000000


	3/8"	23/32"	6 19/64"	51/64"	2 39/64"	7,100	Forged	ASME B30.26, ASTM A952	3697T93	000000
	1/2"	7/8"	7 13/32"	1"	2 53/64"	12,000	Forged	ASME B30.26, ASTM A952	3697T96	000000

Removable Triangle-Shaped Chain Connecting Links—For Lifting

The flat side lets webbing and strapping lay flat, so they don’t slide and bunch. These links are often used to connect webbing to a master link. They meet strict ASME safety standards for lifting. To assemble, hammer the pin through the center. They’re also known as hammer locks and sling links.

Note: Connecting links are for vertical lifting only.

For Grade 100 Chain—Links for Grade 100 chain are approximately 20% stronger than links for Grade 80 chain.

Powder-Coated Alloy Steel—Powder-coated alloy steel links have mild corrosion resistance.

	Wide End Inside Wd.	Wt. Cap., lb.	Fabrication	Specs. Met		Each
For Grade 100 Chain







	Orange Powder-Coated Alloy Steel

	5/16"	7/16"	2 19/32"	1 3/16"	5,700	Forged	ASME B30.26, ASTM A952, OSHA Compliant 29 CFR 1910.184	7645N11	000000


	3/8"	1/2"	3 3/16"	1 9/16"	8,800	Forged	ASME B30.26, ASTM A952, OSHA Compliant 29 CFR 1910.184	7645N12	00000
	1/2"	3/4"	4 3/32"	1 31/32"	15,000	Forged	ASME B30.26, ASTM A952, OSHA Compliant 29 CFR 1910.184	7645N13	00000
	5/8"	13/16"	4 7/16"	1 27/32"	22,600	Forged	ASME B30.26, ASTM A952, OSHA Compliant 29 CFR 1910.184	7645N14	000000

Pear-Shaped Riveted Hammer-Close Chain Connecting Links—Not for Lifting

Restrict rope and chain movement with the narrow end, attach multiple connectors to the wide end, and then hammer these links closed. Using a ball peen hammer, strike the prongs until they expand and hold the link together. Made of galvanized steel, these links have a thick coating for corrosion resistance. Never reuse these links after they've been closed.

	Thk.	Inside Lg.	Narrow End Inside Wd.	Wide End Inside Wd.	Wt. Cap., lb.	Fabrication		Each
Galvanized Steel



	3/8"	7/16"	2"	9/16"	25/32"	2,200	Forged	3895N11	000000


	1/2"	1/2"	2 15/32"	11/16"	31/32"	4,000	Forged	3895N12	00000

Hammer-Set Cotter Pins

Unlike standard cotter pins, you only need access to one side of these pins to install. They’re often used where obstructions make it difficult to reach around a clevis pin or locknut to secure it. Strike the head to drive them through a hole and force the prongs apart. Once installed, these pins are permanently bent and can’t be reused.

Steel

Zinc-Plated Carbon Steel—These pins withstand occasional exposure to moisture. However, since friction from moving parts can wear away the finish, they're not ideal for wet environments. While not nearly as corrosion resistant as stainless steel, they are stronger and won’t deform under stress.

	Lg.	Specs. Met	Pkg. Qty.		Pkg.
Zinc-Plated Carbon Steel







				1/16" Diameter

				1/2"	ASME B18.8.1	100	90260A101	00000


				3/4"	ASME B18.8.1	100	90260A102	0000
				1"	ASME B18.8.1	100	90260A103	0000
				1 1/4"	ASME B18.8.1	100	90260A104	0000
				1 1/2"	ASME B18.8.1	100	90260A105	0000
				2"	ASME B18.8.1	100	90260A106	0000




						3/32" Diameter

						3/4"	ASME B18.8.1	100	90260A107	0000


						1"	ASME B18.8.1	100	90260A108	0000
						1 1/4"	ASME B18.8.1	100	90260A109	0000
						1 1/2"	ASME B18.8.1	100	90260A111	0000
						2"	ASME B18.8.1	100	90260A112	0000




								7/64" Diameter

								3/4"	ASME B18.8.1	100	90260A113	0000


								1"	ASME B18.8.1	100	90260A114	0000
								1 1/2"	ASME B18.8.1	100	90260A115	0000
								2"	ASME B18.8.1	100	90260A116	0000




										1/8" Diameter

										3/4"	ASME B18.8.1	100	90260A117	0000


										1"	ASME B18.8.1	100	90260A118	0000
										1 1/4"	ASME B18.8.1	100	90260A119	0000
										1 1/2"	ASME B18.8.1	100	90260A121	0000
										1 3/4"	ASME B18.8.1	100	90260A122	0000
										2"	ASME B18.8.1	100	90260A123	0000
										2 1/2"	ASME B18.8.1	100	90260A124	0000
										3"	ASME B18.8.1	100	90260A125	00000




												5/32" Diameter

1"												ASME B18.8.1	100	90260A126	0000


1 1/4"	ASME B18.8.1											100	90260A127	0000
1 1/2"	ASME B18.8.1											100	90260A128	0000
1 3/4"	ASME B18.8.1	50										90260A129	0000
2"	ASME B18.8.1	50	90260A131									0000
2 1/2"	ASME B18.8.1	50	90260A132									0000
3"	ASME B18.8.1	50	90260A133									0000




		3/16" Diameter

		1"	ASME B18.8.1									100	90260A134	00000


		1 1/4"	ASME B18.8.1									100	90260A135	00000
		1 1/2"	ASME B18.8.1									50	90260A136	0000
		1 3/4"	ASME B18.8.1	50								90260A137	0000
		2"	ASME B18.8.1	50	90260A138							0000
		2 1/2"	ASME B18.8.1	50	90260A139							0000
		3"	ASME B18.8.1	50	90260A141							0000
		4"	ASME B18.8.1	50	90260A142							00000




				1/4" Diameter

				1 1/2"	ASME B18.8.1							50	90260A143	0000


				2"	ASME B18.8.1	50	90260A144					00000
				2 1/2"	ASME B18.8.1	50	90260A145					00000
				3"	ASME B18.8.1	50	90260A146					00000
				3 1/2"	ASME B18.8.1	50	90260A147					00000
				4"	ASME B18.8.1	50	90260A148					00000




						5/16" Diameter

						2"	ASME B18.8.1					50	90260A149	00000


						2 1/2"	ASME B18.8.1	50	90260A151			00000
						3"	ASME B18.8.1	50	90260A152			00000
						4"	ASME B18.8.1	25	90260A153			00000




								3/8" Diameter

								2"	ASME B18.8.1			25	90260A154	00000


								2 1/2"	ASME B18.8.1			25	90260A155	00000
								3"	ASME B18.8.1			10	90260A156	0000
								3 1/2"	ASME B18.8.1	10	90260A157	0000
								4"	ASME B18.8.1	10	90260A158	0000

Heavy-Vibration-Resistant Hammer-Set Cotter Pins

Even under extreme stress and vibration, these heavy duty pins won’t work their way out of a hole. The wedge-lock design withstands the most demanding applications, including securing railcar wheels. You only need access to one end of the pin to install. Slide into a hole and then hit the head with a hammer to wedge the prongs open. Once installed, these pins are permanently bent and can’t be reused.

Steel

Carbon Steel—Stronger than stainless steel, these pins won't deform from stress and vibration. They perform best in dry environments since moisture will cause them to rust.

		Pkg.
Carbon Steel







	5/16" Diameter

	2"	ASME B18.8.1	10	90700A101	000000


	2 1/2"	ASME B18.8.1	10	90700A102	00000
	3"	ASME B18.8.1	10	90700A103	00000
	3 1/2"	ASME B18.8.1	10	90700A104	00000