Aviation Dictionary
نوعی میخ پرچ کور و بسیارمحکم
A type of hollow-shank, high-strength blind rivet. The rivet is put into the hole in the structure, and a tapered pin is driven into the hollow shank. The pin expands the rivet so serrations on the outside of the shank press into the sides of the hole and hold the rivet firmly in place.