Kay 4 Pcs 5-16" Truss Barrel Nut Dome Head Large Cargo Trailer Full Pass Thru

4- Barrel truss Dome head Nuts 5/16" - 18 x .625"L (coarse thread) Zinc plated steel T45 torx bit required to tighten or 7/32" allen wrench Head diameter 1" (1.000") Barrel length from inside of flange 5/8" (.625") long Used with 5/16" carriage bolts for mounting hasp, door handles and other items on inside of trailer Nuts designed to work with Cam lock , bar lock door, Swing hinge handle that are placed on van, cargo,utility, motorcycle trailers.