A soft metal or nonmetal sleeve, designed to mate with a pin-rivet. it may include an external wrenching facility which breaks off at a perdetermined torque to form a head.
NSN 6145-01-542-9849
NSN 5925-00-770-4068
NSN 5996-01-196-2042
NSN 6150-01-286-5671
NSN 5935-00-732-6128
NSN 6145-01-401-3713
NSN 5985-01-034-8493
NSN 5935-01-406-4329
NSN 5950-00-736-8281
NSN 5960-01-416-6187
NSN 5920-01-118-0309
NSN 6610-00-253-7676