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Hammer Lock Couplings

Hammer Lock Couplings

Hammer Lock Couplings Also known as hammer locks and sling links, assemble by hammering a pin through the center. They're often used to connect the legs of chain sling to a master link.

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Product Description

Hammer Lock Couplings


Also known as hammer locks and sling links, assemble by hammering a pin through the center. They're often used to connect the legs of chain sling to a master link.

Grade 120 connectors are the strongest links we offer. When used with chain of the same grade, they are approximately 20% stronger than Grade 100 links and about 35% stronger than Grade 80 links. They're powder coated for mild corrosion resistance.

Grade 100 connectors are approximately 20% stronger than Grade 80 links when used with chain of the same grade.

Grade 63 connectors are approximately 60% as strong as Grade 80 links when used with chain of the same grade. They're stainless steel and have excellent resistance to salt water and chemicals.

Note: Connecting links are for vertical lifting only.


For Chain
Trade Size
Thick. Inside
Lg.
Inside
Wd.
Capacity,
lbs.
Fabrication Specifications Met  
Grade 120
Blue Powder-Coated Alloy Steel
9/32 29/64" 2 31/64" 13/16" 5,200 Forged ASME B30.26 5514T3
3/8 45/64" 3 1/16" 1 9/64" 10,600 Forged ASME B30.26 5514T4
1/2 7/8" 4 13/64" 1 19/64" 17,900 Forged ASME B30.26 5514T5
Grade 100
Black Ultra-Corrosion-Resistant Coated Alloy Steel
7/32 5/16" 1 47/64" 35/64" 2,700 Forged ASME B30.26 33585T91
9/32 25/64" 2 3/32" 43/64" 4,300 Forged ASME B30.26 33585T62
5/16 15/32" 2 7/16" 3/4" 5,700 Forged ASME B30.26 33585T92
3/8 19/32" 2 53/64" 15/16" 8,800 Forged ASME B30.26 33585T64
1/2 51/64" 3 15/32" 1 7/64" 15,000 Forged ASME B30.26 33585T72
5/8 15/16" 4 13/32" 1 11/32" 22,600 Forged ASME B30.26 33585T66
3/4 1 17/64" 4 31/32" 1 47/64" 35,300 Forged ASME B30.26 33585T93
7/8 1 11/32" 6 5/16" 2" 42,700 Forged ASME B30.26 33585T94
Orange Painted Alloy Steel
7/32 5/16" 1 47/64" 35/64" 2,700 Forged ASME B30.26 33585T81
9/32 25/64" 2 3/32" 43/64" 4,300 Forged ASME B30.26 33585T42
5/16 15/32" 2 7/16" 3/4" 5,700 Forged ASME B30.26 33585T82
3/8 19/32" 2 53/64" 15/16" 8,800 Forged ASME B30.26 33585T44
1/2 51/64" 3 15/32" 1 7/64" 15,000 Forged ASME B30.26 33585T52
5/8 15/16" 4 13/32" 1 11/32" 22,600 Forged ASME B30.26 33585T46
3/4 1 17/64" 4 31/32" 1 47/64" 35,300 Forged ASME B30.26 33585T83
7/8 1 27/64" 6 3/16" 2 1/16" 42,700 Forged ASME B30.26 33585T84
Grade 80
Alloy Steel
7/32 1/4" 1 13/32" 29/64" 2,100 Forged ASME B30.9 3578T13
9/32 5/16" 1 15/16" 9/16" 3,500 Forged ASME B30.9 3578T14
3/8 1/2" 2 27/64" 13/16" 7,100 Forged ASME B30.9 3578T15
1/2 45/64" 3 33/64" 1 5/32" 12,000 Forged ASME B30.9 3578T16
5/8 13/16" 4 1/16" 1 13/32" 18,100 Forged ASME B30.9 3578T17
3/4 15/16" 4 25/32" 1 23/32" 28,300 Forged ASME B30.9 3578T18
7/8 1 3/64" 5 1/4" 1 57/64" 34,200 Forged ASME B30.9 3578T19


Grade 63
318 Stainless Steel
3/16 9/32" 1 7/16" 1/2" 1,300 Forged ASME B30.9 1119N13
3/8 33/64" 2 7/8" 15/16" 5,500 Forged ASME B30.9 1119N11
5/8 53/64" 4 1/16" 1 7/16" 13,800 Forged ASME B30.9 1119N12
318LN Stainless Steel
9/32 3/8" 2 1/8" 11/16" 2,750 Forged ASME B30.9 1119N14
1/2 11/16" 3 5/8" 1 1/8" 9,350 Forged ASME B30.9 1119N24

Strike the prongs with a ball peen hammer and they expand to hold the connecting link together.

Galvanized steel links have a thick coating for corrosion resistance.

316 stainless steel connectors have excellent resistance to salt water and chemicals.

For Chain
Trade Size
Thick. Inside
Lg.
Inside
Wd.
Capacity,
lbs.
Fabrication Specifications Met  
Steel
1/4 1/4" 7/8" 7/16" 1,400 Forged Fed. Spec. RR-C-271D 3576T12
5/16 5/16" 1" 1/2" 2,000 Forged Fed. Spec. RR-C-271D 3576T13
3/8 3/8" 1 1/8" 9/16" 2,800 Forged Fed. Spec. RR-C-271D 3576T14
1/2 1/2" 1 7/16" 21/32" 4,700 Forged Fed. Spec. RR-C-271D 3576T16
5/8 5/8" 1 7/8" 13/16" 7,200 Forged Fed. Spec. RR-C-271D 3576T18
Galvanized Steel
1/4 1/4" 7/8" 7/16" 1,400 Forged Fed. Spec. RR-C-271D 3576T32
5/16 5/16" 1" 1/2" 2,000 Forged Fed. Spec. RR-C-271D 3576T33
3/8 3/8" 1 1/8" 9/16" 2,800 Forged Fed. Spec. RR-C-271D 3576T34
1/2 1/2" 1 7/16" 21/32" 4,700 Forged Fed. Spec. RR-C-271D 3576T36
5/8 5/8" 1 7/8" 13/16" 7,200 Forged Fed. Spec. RR-C-271D 3576T38
316 Stainless Steel
1/4 5/16" 7/8" 27/64" 1,400 Cast __ 3863T22
5/16 23/64" 1" 1/2" 2,000 Cast __ 3863T23
3/8 13/32" 1 1/8" 37/64" 2,800 Cast __ 3863T21
1/2 1/2" 1 1/2" 3/4" 2,000 Cast __ 3863T34
5/8 5/8" 1 7/8" 1" 3,000 Cast __ 3863T35















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