flush head, flat head, countersunk head in a bolt, screw or rivet, a flat conical top allowing it to be inserted flush with a surface
flush head, flat head, countersunk head in a bolt, screw or rivet, a flat conical top allowing it to be inserted flush with a surface
flush head, flat head, countersunk head in a bolt, screw or rivet, a flat conical top allowing it to be inserted flush with a surface
flush head, flat head, countersunk head in a bolt, screw or rivet, a flat conical top allowing it to be inserted flush with a surface