Slotless head for a smooth, finished appearance.

Large diameter (.390/.360) low-profile head (.075/.060 thick including serrations).

     The large diameter head provides strong gripping pressure while allowing adequate clearance in the
     corners to secure side panels to back panels.

     The extremely low-profile head allows these bolts to be used to secure loose doors following replacement
     of missing or worn bolts, or when new hinges have been installed.  They provide adequate clearance between
     the locker frame and the back edge of the closed door, unlike many large head bolts that force the door out of
     alignment by pressing against the inside of the frame.  This same low-profile allows use of these bolts to secure
     replacement frame latches, this time providing clearance between the locker frame and the edge of the door when
     it closes.

18 directional serrations on the reverse side of the head ease installation while providing secure fastening
that won't vibrate loose with normal use.

10-24 UNC-2A Thread.  Accepts standard, readily available 10-24 x 3/8" diameter hex nuts.  Hex nuts are easily
started and tightened with a nut driver, unlike square nuts that require tedious use of a small wrench.

7/16" length from bottom of serrations to end of bolt.  The extra length provides a few extra threads that are often
needed to get a nut started when working with bent panels.

Heat treated for hardness.  If you're currently buying cheap bolts produced in Taiwan and are frustrated by the heads snapping off, then these are for you.  You can tighten these down as much as you like. 

Zinc plated for rust resistance.

Proudly made in the USA.