The allen bolt, also known as the hexagon socket bolt or cup head screw, is a fastener widely used in the mechanical field. It is characterized by a hexagonal groove on the head, which is suitable for situations where a large torque is required or it is to be embedded in the inside of the part.

The materials of the allen bolt include stainless steel (such as SUS201, SUS304, SUS316) and iron bolts of different strength grades (4.8 to 12.9).

Production process: including drilling, cold forging hexagonal forming and other steps. For single pieces, hexagonal punches and hammers can be used to punch out.

Performance requirements of allen  bolts: The material, hardness, tensile strength and yield strength of the bolts must meet the requirements of specific grades. For example, the 10.9 grade bolts can reach a tensile strength of 1000MPa and a yield strength of 900MPa after heat treatment.