How Thick Is Hook of Buyers Products 3/8" x 42" Class 4 Trailer Safety Chain 337BSC3842
Updated 08/29/2026 | Published 08/18/2026 >
Question:
How thick is the hook? I am planning on using bow shackles on my hitch. The safety change hooks will connect to the bow shackles. I need to ensure the bow shackle is wide enough at the bolt pass-through to accommodate the thickness of the hook.
asked by: Rick
Expert Reply:
Hey Rick, the thickness of the hook of the Buyers Products 3/8" x 42" Class 4 Trailer Safety Chain with 1 Clevis Hook # 337BSC3842 is 2 inches. Would that work for you?

John K.
8/26/2026
Don't know why you need to slide the safety chain clevis slip hook thru the narrow part of a threaded shackle. These 3/8" slip hooks should have enough opening between the inner hook body and the safety catch for a 1/2" up to 3/4" shackle loop. I've put shackles on step bumper plate holes before and just latched the safety chain hooks to the rounded part on the shackles. Also, some safety chains had 7/16" chains and slip hooks and the smaller slip hooks wouldn't fit on factory hitches. Had to swap out with 3/8" slip hooks so the catches would work.

Product Page this Question was Asked From
Buyers Products 3/8" x 42" Class 4 Trailer Safety Chain with 1 Clevis Hook - 43 Proof
- Trailer Safety Chains
- 3/8 Inch Diameter
- Gooseneck Trailer
- Standard Trailer
- 42 Inch Long
- 15000 lbs
- Single Chain
- Clevis Hooks
- Buyers Products
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Rick
8/25/2026
It can't be 2 inches thick. It should be something like 1/2 inch or 3/8 of an inch. It may be 2 inches long. Can someone please take another attempt and let me me know.