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 6240-01-384-5946
NSN 5950-01-094-1886
NSN 6610-00-241-2316
NSN 6240-01-013-5138
NSN 6145-01-034-8201
NSN 6645-01-522-0154
NSN 5965-01-285-2133
NSN 5935-01-212-5413
NSN 6645-01-589-0983
NSN 7035-01-122-1264
NSN 5935-01-514-4488
NSN 5999-00-968-7180