Screw 4-40; ss; 1/4
No other part numbers with same form, fit, and function found.
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 5960-00-952-1868
NSN 5965-00-761-4666
NSN 5999-01-322-7127
NSN 5930-01-421-2417
NSN 6135-01-052-9634
NSN 5996-01-574-8853
NSN 6620-01-495-7446
NSN 5910-00-509-4327
NSN 5905-01-061-9848
NSN 5950-01-393-9483
NSN 5835-01-286-6499
NSN 5925-01-169-4284