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 5895-01-081-5896
NSN 2925-01-285-7163
NSN 5965-01-243-5494
NSN 2925-01-580-1527
NSN 5985-01-160-8509
NSN 6645-01-322-5644
NSN 6220-01-299-4392
NSN 6220-00-281-9206
NSN 5999-01-648-2640
NSN 6320-01-144-3810
NSN 5835-00-649-9402
NSN 6610-01-188-8163