part stock: 184990
Thread/Screw/Hole Size: M12, Diameter - Inside: 0.512" (13.00mm), Diameter - Outside: 1.125" (28.58mm) 1 1/8", Diameter - Shoulder: 0.701" (17.80mm), Thickness - Overall: 0.531" (13.50mm), Length - Below Head: 0.438" (11.13mm) 7/16",