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 6610-01-056-1335
NSN 6110-01-434-2544
NSN 5925-00-308-2712
NSN 5975-01-480-7913
NSN 6240-00-021-1296
NSN 5935-00-109-0699
NSN 5960-00-431-5263
NSN 6645-01-435-8356
NSN 5985-01-541-9907
NSN 5999-01-507-0119
NSN 6105-00-951-0974
NSN 4140-01-155-3101