... 2, BS916 2) Material: Carbon steel nut and boltSize range: M3 to M30 hex nut Materials: ... carbon and alloy steel Platings: black oxide, zinc, chrome, ... , nickel, dacromet, delta-tone, geomet and ruspert Grade: 4, 6, 8 and 10Standard: DIN934(555, 936),ANSI18.2. ... 2, BS916 2) Material: Carbon steel Diameter: 5-20mm. HYFJ-006 nut and ...