Specification :

We are company specializing in the manufacture and export of high quality stainless steel fasteners/self drilling screws/machine screws. We have profuse designs with series quality grade, and expressly, our price is very competitive. You are welcome to visit our website www.qx-screws.com which includes our company profiles and something latest designs. Material: SUS*M7¡¢302HQ¡¢303CU¡¢303F¡¢304¡¢304CU¡¢304HC¡¢304J3¡¢304L¡¢304M¡¢305J1¡¢316 ¡¢316C¡¢316CU¡¢316L¡¢410¡¢420¡¢430¡­¡­ Salt spray testing for all our products more than 72hours the longest can reach up to 2000hours.