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Knox Trailers · Hardware & Fasteners
3/8-16X1-1/4
In stock · ships from Knoxville
This is a 3/8"-16 x 1-1/4" truss head (button head) rail bolt with a Torx (T45) drive.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
We don't publish fitment for this part yet. Rather than guess, get it confirmed against your truck in under a minute.
It's designed to fasten crossmembers, floors, and other components to the bottom rails of tractor trailers and truck bodies, typically mating with a T-nut installed in the rail flange. You replace them when the bolt is bent, severely corroded, or the threads are damaged—loose rail fasteners can compromise the trailer's structural integrity.
Part Number: 3/8-16X1-1/4
RAIL BOLT
Unit: ea
Dealer: Knox Trailers
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