alen bolts , Iran

Allen bolts are manufactured from chromium-vanadium alloy steel with a strength grade of 12.9 per ISO 4762. Their ultimate tensile strength is a minimum of 1200 MPa. Common thread diameters range from M1.6 to M64, available in fine or standard pitch. The depth of the internal hex socket is approximately 0.7 times the nominal screw diameter. The corresponding Allen key size varies from 0.7 to 46 mm. The undercut angle below the head is often designed at 120 degrees for stress relief. The screw length, excluding the head, is available from 3 to 300 mm.

The surface undergoes black oxide or zinc-nickel coating with a thickness of 5-8 microns. This coating provides corrosion resistance for over 240 hours in salt spray testing. Stainless steel Allen screws are made from grades A2-70 or A4-80 with tensile strengths of 700 and 800 MPa. Precise tightening is achieved using a calibrated torque wrench. The torque for a grade 12.9 screw typically ranges from 0.15 to 5000 Newton-meters. These fasteners are used in machinery, molds, and applications with limited space.You can order and buy alen bolts from Iran by contacting us through whatsaap and email.
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