Ms 1/4-20 x 3 hhcs
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 6645-01-241-9483
NSN 5905-00-935-8540
NSN 5935-01-061-9725
NSN 5985-00-359-9067
NSN 6645-01-611-2894
NSN 5990-01-223-6321
NSN 6650-00-085-3846
NSN 5960-01-560-1958
NSN 6240-01-375-0179
NSN 6110-01-539-1090
NSN 5996-01-104-4161
NSN 5950-01-604-8820