Special Features:

Pan head, cruciform recess, titanimum alloy 6al-4v, full thread, self-locking and nonlocking; nom thread .1380-32; a diameter .270 max, .256 min; d diameter max .138; h .097 max, .087 min; r .010 max .005 min; p rad min .015; s ref .207; u max .039; recess size 2; alum coated

Properties:

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.