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 5930-00-777-3467
NSN 5855-01-433-3197
NSN 5920-01-498-2705
NSN 6685-01-573-5841
NSN 5950-00-389-7139
NSN 6150-01-188-8232
NSN 6685-01-027-1168
NSN 6135-01-503-1688
NSN 6130-00-103-1245
NSN 5915-00-270-4790
NSN 5935-01-119-0499
NSN 5930-01-458-1159