Model no.: din571 Type: hexagon head Connection: common bolt Standard: din Diameter: m4-m20 Heat treatment: no Port: ningbo port Transport package: bulk packed in 25kgs carton then 900kgs pallet Origin: ningbo, china Material: carbon steel Groove: hexagon Head style: hexagonal Grade: type1 Surface treatment: black, h.D.G, zinc plated Raw material: carbon steel Trademark: sd Specification: m4-m20 Hs code: 7315189090 Standard Hex head wood screws din571 Grade Type1 Size M4-m20 Surface treament Black, zinc plated, zinc (yellow) plated, h.D.G. Etc. Material Carbon steel
