A headed externally threaded fastener whose threaded portion is of one nominal diameter, with a square neck directly beneath the head.
NSN 6135-00-010-5275
NSN 2925-01-535-7235
NSN 5985-01-555-7269
NSN 5998-00-694-0019
NSN 4140-01-066-7975
NSN 5950-00-283-3149
NSN 5996-01-207-5058
NSN 6650-01-386-5787
NSN 5960-01-215-9232
NSN 6220-01-148-5098
NSN 5915-01-480-5476
NSN 6610-00-303-9647