Elliptical locking feature id
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 6320-01-631-7828
NSN 6220-01-442-8825
NSN 5950-01-135-6818
NSN 5965-00-256-8687
NSN 5895-00-838-8269
NSN 6620-00-052-3277
NSN 6150-00-959-6164
NSN 5935-01-204-6195
NSN 5895-01-082-8181
NSN 5855-01-212-6612
NSN 6110-00-617-1757
NSN 6685-01-439-8023