Both the hat and mandrel are pre-assembled and ready to use. IFI 114 Compliant. Fastener Type: POP Rivets Blind Open End. Grade/Material: 304 Stainless Steel. 1/8" (#4) | 304 Stainless Steel. EXAMPLE: If the length of the hat is 1/2" the rivet is actually a 3/8" grip (.375), also known as a 4-6 rivet.
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