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Galvanized Allen bolts are typically made from carbon steel grades 8.8 and 10.9, with tensile strength ranging from 800 to 1040 MPa. These bolts have diameters between 4 and 24 millimeters and lengths ranging from 10 to 200 millimeters. They are manufactured according to DIN 912 and ISO 4762 standards and feature an internal hexagonal head with a 90-degree angle. Cold or hot-dip galvanizing increases resistance to corrosion and rust in humid and industrial environments. The coating thickness ranges from 5 to 25 microns, providing long-term protection against oxidation.
The threading of galvanized Allen bolts is produced to DIN and ISO standards with a dimensional tolerance of ±0.15 millimeters. Thread pitch usually ranges from 0.7 to 2.5 millimeters and is available in both full-thread and half-thread variants. Surface hardness after heat treatment and galvanizing reaches 35 to 45 HRC, improving wear resistance and preventing plastic deformation. These bolts are widely used in construction, automotive, and industrial machinery due to their high strength and long-lasting durability, making them ideal for high-stress connections.
WEBSITE: galvanized cap head screw Iran
