Qualfast: 5/16 UNC X 3/4 Skt Head Cap Screw 1936SER (GR-12.9) Socket Head Cap Screws UNC Alloy Steel - Self Colour ANSI B18.3 (BS2470 1936 Ser.) Grade 12.9. Suitable for all high tensile applications. MPN: 5036140031821 EAN: 5036140031821 5…View more