fasteners,bolts,nuts, (1).Standard:DIN931/933 ,ANSI,BSW,JIS. (2).Size:M5-M20;1/4"-5/8" (3).Material:carbon steel Our products are both excellent in quality and reasonable in price. In addition,we also produce other products as follows: We mainly produce standard and non-standard fastener of grade 4.8-12.9, including 2 seriesof stainless steel and iron products.Carbon steel and stainless size of ...