Truss Barrel Nut Dome Head nut 5/16" - 18 x .625"L (coarse thread) Zinc plated steel T40 torx bit required to tighten or 5/16" hex bit Head diameter 1" (1.000")

torx barrel nut 5/16 Barrel length from inside of flange 5/8" (.625") long Barrel diameter .430" Bolt does pass thru.

5/16 Torx Barrel Nut 5/16″-18 Thread x .597 Barrel Length Used with 5/16〃-18 Body Bolt.

Trailer Hardware Nuts Used In Mounting Hardware For Trailer Door Hinges, Hasps, And Cams. Also Used For Door Bar Locks.
5/16 barrel nut designed to work with Cam lock , bar lock door, Swing hinge handle that are placed on van, cargo,utility, toy hauler, motorcycle trailers.