Finish & Coating: Natural Finish, Nickel Plated, Electro-Tinned Plated. Threads: UNF & NPT Size: As per material specifications desired by the customer. Material Specification: CW614N (CuZn39Pb3), CW617N (CuZn40Pb2), CW602N(CuZn36Pb2As), CW511L (CuZn38As), Cuphin (CuZn21Si3P) or as per customer requirement. * No-Lead manufacturing also available.