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The M6X40 flat-head Allen hardened screw has a nominal diameter of 6 millimeters and a length of 40 millimeters, suitable for assembling medium-load mechanical components. Its thread pitch is standard at 1 millimeter, with a thread depth of approximately 0.6 millimeters, ensuring uniform engagement and stress-free force transfer. The unit weight is around 0.035 kilograms per 10 centimeters of length, allowing precise calculation of total assembly weight and load analysis in industrial structures. The flat-head design enables flush installation in countersunk holes, providing a uniform pressure distribution and a clean, even surface at the connection.
This screw is manufactured according to international standards DIN 912 and ISO 4762, ensuring consistent thread quality, tensile strength, and surface hardness. The body is made of hardened carbon steel, providing a tensile strength of approximately 800 MPa and surface hardness between 200–220 HV. Accurate thread depth and smooth surface finishing increase wear resistance and allow repeated assembly without thread deformation. These production standards guarantee dimensional uniformity and reliable mechanical performance of the M6X40 screw in industrial machinery, mechanical equipment, and structural applications.
WEBSITE: M6X40 allen screw DIN 7991 Iran
