Zinc plated steel hex head wood screws DIN571  1. Standard: DIN571 or ANSI/ASME B18.2.1 IFI C-18     Customized screws acceptable  2. Class 6.8, 8.8, 10.9 (DIN); Grade 2, 5, 8 (SAE)  3. Material: Steel 1035, 1045. Alloy steel,     40Cr steel, 40Mn steel, SS304  4. Specifications Supply:      Inch size: 1/4 to 5/8 thread size, 1-1/2 to 16 inch length      Metric size: M4 to M16 thread size, 16 to 420mm length      Or customized dimensions!   5. Surface Treatment:      Steel: black oxide, ZP, YZP, BZP, HDG      Dacromet or Nickle, Chrome and brass coated      Stainless steel: plain or hardened SS302, SS304, SS410 6. Regular supply offers (DIN571 C1035, ZP, YZP FOB price) Price per 1,000 pcs Packing: standard carton bulk packs (20kgs)