... than 20 years experience in special fastener Name: hex nut with internal thread and castle screw Ability for the material of ... ,1045,etcAlloy steel4130,4140,G51150,etcStainless steel201,202,301,302,303,304,316,310,430,etcBrassC28000,C37710,C3450,C27200,etcBronzeC51900,C60600 ... have our own way to supply youthe high quality products with lowest price and delivery on time as we can.We ...