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 6685-00-455-3729
NSN 5855-01-112-7725
NSN 5945-01-210-4465
NSN 5895-00-376-5074
NSN 2925-00-907-2709
NSN 5960-00-024-0633
NSN 5935-00-626-8177
NSN 5930-01-501-6211
NSN 6645-01-084-5627
NSN 6220-01-275-7144
NSN 6320-00-225-7013
NSN 5925-01-377-5890