Screw has hexagon head, reference to 12p2-2apq120-4
An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.
NSN 4140-00-230-4252
NSN 5998-00-539-3829
NSN 6220-01-469-1904
NSN 5960-01-589-6846
NSN 4140-00-707-5963
NSN 5996-01-540-8329
NSN 2925-00-572-0454
NSN 6130-01-085-6095
NSN 5996-01-201-9685
NSN 6110-01-352-6438
NSN 5975-01-371-6613
NSN 5895-01-506-1656