Nut DIN970 Standard:DIN Material:Carbon steel Diameter:M3-M30 1/4"-1 8/7" thread:MM,UNC,UNF,.. Standard: DIN /IS0 /ANSI/UNI/JIS Size: M3-M30, 1/4"-1 7/8" Material: carbon steel 35#,,brassGrade: 8.8,10.9,12.9,SAE J429 GR.5/GR.8Surface: Black, Zinc Cr+3, Yellow Zinc Cr+6,H.D.G., Dacromet, etc.Packing: bulk, box packing, in carton with pallets ,according to customer requirement .Delivery Lead Time: ...