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Knox Trailers · Hardware & Fasteners
TORX-05225
In stock · ships from Knoxville
This is a heavy-duty floor board screw designed to secure the wooden or composite floor boards to the steel or aluminum crossmembers on a truck trailer.
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.
The 5/16-inch diameter and 2-1/4-inch length are standard for many flatbed, dry van, and reefer trailer floors. It uses a Torx drive (T40) for non-slip installation, and its coarse thread cuts into the crossmember material, providing strong holding power and resistance to loosening from road vibration. You typically replace these when boards need re-securing or when screws become stripped, corroded, or damaged during floor repairs.
Part Number: TORX-05225
SCREW, FLOOR 5/16X2-1/4
Unit: ea
Dealer: Knox Trailers
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