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 5996-00-511-9354
NSN 5950-01-226-5876
NSN 6685-01-025-1587
NSN 5950-01-523-0037
NSN 5998-00-138-5265
NSN 5925-00-336-1992
NSN 6320-01-209-0952
NSN 6135-01-631-0269
NSN 5910-00-863-5825
NSN 5945-01-332-4413
NSN 5990-01-644-3095
NSN 5915-00-166-1395