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 5855-01-180-5369
NSN 7035-00-413-0992
NSN 5985-01-138-6143
NSN 5930-01-380-8274
NSN 6620-01-548-7441
NSN 5920-01-463-3156
NSN 2925-00-284-1534
NSN 5895-01-104-5508
NSN 6150-01-205-2440
NSN 6610-01-143-5650
NSN 2925-01-487-0886
NSN 6145-00-437-8960