Nickel or cadmium plated per federal specification ff-s-92, type i, style 8s, binding head, slot drive, 4-40 unc-2a thread, 100 ea per box; screw material alloy steel
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 5998-00-058-7816
NSN 6645-01-470-7246
NSN 6150-00-814-5905
NSN 6650-00-879-5834
NSN 5905-01-399-6483
NSN 5999-00-587-0167
NSN 5910-00-500-0192
NSN 6105-00-861-1201
NSN 5950-00-555-2881
NSN 5945-00-916-9071
NSN 5965-00-170-5254
NSN 6105-01-605-1355