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 5910-01-207-0909
NSN 6150-01-216-7961
NSN 5999-00-529-0157
NSN 5910-01-512-5249
NSN 6105-00-068-9357
NSN 6685-00-076-1841
NSN 5945-00-156-0781
NSN 6685-00-598-1944
NSN 6240-01-145-4916
NSN 5915-01-327-0823
NSN 5999-00-757-8986
NSN 6150-01-323-6378