Dear Sir&Madam: we are looking for screw such as self-tapping screw,phillips countersunk head,material by sus 201, specification tapping-screw:4*32mm,4*38mm, 4*40mm . And also looking for coupling rod,material by steel ,yellow zinc plated .specification coupling rod:1/4*534mm, (thread length in double end is 45mm)Company Name: DAESHIN KUNKI IND CO.,LTD Street Address: junwang-dong City: shiheng city Province/State: Gyeonggi-do Country/Region: South Korea Telephone: 82-31-4990860 Fax: 82-31-4990864