... 01mm tolerance 4.QC inspect after products finished 5.brass screws A:certification: ISO9001:2008B.Products Available bolts, ... parts, electronic parts, etc.C.Advantage1. Competitive price with good quality 2. Low MOQ (100pcs is even ... SS304, SS316 etc.2. Steel:Q235,20#,45# etc.3.Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200( ... as below: Welcome to our Factory brass screws with nylon tip