Quick Details Finish: Black, Black Oxide, ZINC PLATED Material: Steel Measurement system: Metric Head Style: inner hexagon Place of Origin: Jiangsu, China Brand Name: DALI Model Number: ISO10642 Standard: ISO Product name: Hexagon socket countersunk head screws Grade: 8.8 10.9 12.9 Surface: Plain,Black,Zinc,HDG Specification: M4-M16 MOQ: 500kgs Delivery time: 10-25 Days Payment Term: T/T Brand: DaLi