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 5895-00-274-6255
NSN 6645-01-495-0939
NSN 5895-01-437-4440
NSN 5835-01-090-6712
NSN 6135-00-377-9165
NSN 5950-00-768-4001
NSN 6135-00-542-6216
NSN 6105-00-848-9835
NSN 6110-01-625-4070
NSN 6130-01-157-9307
NSN 6145-01-093-5259
NSN 5905-01-092-0507