ISO7380 Hexagon socket screws with flat round head 8.8 10.9 12.9 Grade

Short Description:

ISO7380 hexagon socket screw, a kind of hexagon socket screw, its head is flat round head, the middle is concave hexagon, called hexagon socket flat round head screw. ISO7380 flat round head hexagon socket screw is adopted the international standard ISO7380:1997, the standard specifies the thread specification from M3 — M16, performance grade 8.8, 10.9 and 12.9, belong to the high strength and high grade hex socket screw. Generally, the carbon content of carbon steel is used to distinguish low carbon steel, medium carbon steel, high carbon steel and alloy steel. 8.8, 10.9, 12.9 available in stock, other sizes can be customized.

Standard: GB, DIN, ISO, JIS
Size: M3-M100; Customisation
Material: Carbon steel, stainless steel, brass , alloys steel etc.
Finish: Plain, Zinc Plated(Clear/Blue/Yellow/Black), Black oxide, Nickel, Chrome, H.D.G.
Hex head bolt and nut Grade: 4.8, 6.8, 8.8, 10.9, 12.9, ASTM A194 2, 2H, 4, 7, 7M,8, 8M; A563 Gr. A, C, DH, DH3
Packing: Box, carton or plastic bags, then put on pallets, or according to the demand of the customers