Multi-piece fasteners and methods of fastening

A method for fastening, the method comprising:

• inserting a first pin end of a multi-piece fastener into a bore in a structure, the multipiece fastener comprising
• a fastening collar comprising
• an inner collar surface defining a collar cavity,
• an outer collar surface,
• a coating on the outer collar surface, the coating comprising a film-forming resin and a metal pigment, wherein the coating does not increase a coefficient of friction of the outer collar surface of the fastening collar, and
• a lubrication layer intermediate the coating and the outer collar surface, a pin configured to be at least partially received by the collar cavity, the pin comprising
• the first pin end,
• a second pin end, and
• a shank extending intermediate the first pin end and the second pin end;
• inserting the pin at least partially into the collar cavity;
• and
• forcibly contacting the outer collar surface of the fastening collar with an anvil of a fastening collar installation apparatus and thereby deforming the fastening collar onto the shank of the pin, wherein forcibly contacting the outer collar surface at least partially removes the coating on the outer collar surface and indicates installation of the multi-piece fastener.