1/4-20 x 2 inches
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 5855-01-147-6024
NSN 5935-01-449-0248
NSN 5985-01-325-6191
NSN 6650-01-420-5586
NSN 6110-00-931-6721
NSN 6620-00-270-3275
NSN 5965-01-418-1760
NSN 5998-00-148-8873
NSN 5895-00-257-8667
NSN 5945-00-275-0557
NSN 5920-00-676-9113
NSN 6135-00-042-9255