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 5910-00-134-1463
NSN 5950-01-371-9433
NSN 5930-01-610-7174
NSN 6645-00-276-7544
NSN 6150-00-594-9051
NSN 6685-01-497-7538
NSN 5945-00-925-2411
NSN 5855-00-145-3307
NSN 5905-00-010-8077
NSN 5935-01-534-7596
NSN 5835-01-360-1058
NSN 6645-01-260-7426