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 6620-01-168-4850
NSN 6610-00-527-8892
NSN 5855-01-418-6303
NSN 6135-01-329-7994
NSN 5950-01-111-9258
NSN 6320-01-442-8604
NSN 5960-00-865-8969
NSN 6620-01-415-5803
NSN 6320-00-270-8222
NSN 5855-01-338-1718
NSN 5998-01-225-6526
NSN 5998-01-495-9808