S-92957A140 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and extended service life.
• Precise component alignment and positioning ensured by the 8mm shoulder with a precise fit and tight diameter tolerance.
li>High mechanical strength and durability from a Rockwell B83 hardness and 70,000 psi tensile strength, resisting wear and deformation.
• Effortless manual installation and removal facilitated by the knurled thumb head combined with a 2mm hex drive for secure tool grip.
• Reliable and secure fastening with a Class 6g M3 coarse thread, providing excellent hold in a wide range of materials.
• Compliance with major environmental regulations, being RoHS 3 and REACH compliant for safe use in regulated industries.
• Optimized for quick assembly with a raised round head profile and right-hand thread for standard, efficient fastening operations.

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to solve critical alignment and mounting challenges in precision assemblies. The 18-8 stainless steel material offers excellent resistance to rust and corrosion, making it suitable for applications in electronics, machinery, and automotive sectors where environmental factors are a concern. The 8mm shoulder length with its precise fit acts as a pivot or spacer, ensuring accurate component positioning and reducing shear stress on the M3x0.5mm coarse thread. The combination of a knurled thumb head and hex drive allows for tool-assisted or manual tightening in confined spaces, enhancing assembly efficiency. This design is ideal for securing gears, pulleys, and linkages where durability and dimensional stability are paramount.

Specification Summary & Compliance

This precision shoulder screw features a Class 6g thread fit per metric standards, ensuring consistent and reliable engagement. The shoulder diameter is manufactured to a tight tolerance of -0.025 to 0 mm, and the shoulder length to 0 to 0.05 mm, guaranteeing high dimensional accuracy. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, affirming its suitability for use in industrial and consumer products without hazardous substances.