Used on weaponsight
An externally threaded fastener whose threaded portion is of one nominal diameter. It may have an unthreaded portion with a diameter less than, equal to, or greater than the diameter of the threaded portion. It has either a vertically flattened, circular knurled, or wing type head, all of which are designed for rotation by the thumb and fingers. For items having wrenching facilities such as socket recess, multiple spline or slot heads, use screw (as modified) or bolt (as modified).
NSN 6610-01-152-9240
NSN 6650-00-554-4568
NSN 6240-01-275-1013
NSN 6110-01-608-3775
NSN 6685-01-027-4805
NSN 4140-01-553-0212
NSN 6240-01-458-4672
NSN 5920-00-213-6411
NSN 6150-01-165-2089
NSN 4140-01-123-9149
NSN 6220-00-475-0217
NSN 5950-00-441-7876