Socket Head Cap Screw 5/8 40Cr Alloy Steel

Socket Head Cap Screw 5/8 40Cr Alloy Steel — stocked and shipped worldwide by SFX Fasteners. Available for single-piece retail orders — no minimum order — dispatched from our own warehouse within 24–48 hours.

Technische Daten

Bestellung & Versand

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Über diese Schraube

This is a screw in 40Cr Alloy Steel, at strength class Grade 12.9, supplied black oxide, with an 5/8 thread and a 1-1/4 in length. Every dimension is stated against the standard named above; where a tolerance class matters to your design, ask us and we will confirm it in writing before you order.

A screw threads directly into the parent material or into a nut, so the thread form, the point and the drive decide what it can be used for. Commonly used on machinery, tooling, appliances, electrical enclosures, furniture and automotive assemblies where the head has to sit low or be driven from one side only.

40Cr is a chromium-alloy quench-and-temper steel, the standard feedstock for grade 8.8 and above in China. It reaches 10.9 and 12.9 after heat treatment.

Grade 12.9 is the highest common commercial grade at 1220 MPa tensile / 1100 MPa yield, used for socket head screws and highly stressed joints. Specify Dacromet or black oxide, not electroplated zinc.

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