S-91273A433 M8 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments.
• Precise alignment and smooth rotation ensured by the 35mm shoulder with tight diameter tolerance.
• High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications.
• Secure and efficient installation using the 4 mm hex socket drive and knurled head for enhanced grip.
• Reliable thread engagement with Class 5g6g thread fit and coarse pitch for quick assembly.
• Environmental and regulatory compliance meeting RoHS 3 and REACH standards for safe use.
• Durable, long-lasting design that resists wear and maintains integrity under shear forces up to 35,000 psi.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to address common challenges in precision assemblies, such as misalignment and component wear. The 35mm shoulder length provides a stable bearing surface, allowing for accurate positioning of moving parts like gears and pulleys without additional bushings. Made from 18-8 stainless steel, it offers excellent resistance to rust and corrosion, making it suitable for applications in machinery, automotive, and electronics. The hex socket drive and knurled head facilitate easy installation in tight spaces, while the Class 5g6g thread fit ensures consistent, reliable fastening. This design minimizes downtime and maintenance, enhancing overall efficiency in industrial settings.

Specification Summary & Compliance

This shoulder screw features a metric M8x1.25 coarse thread with a Class 5g6g thread fit for standard tolerance. The shoulder diameter is 8 mm with a tolerance of -0.04 to -0.01 mm, and the shoulder length is 35 mm with a tolerance of 0 to 0.25 mm, ensuring precise dimensional accuracy. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and safe industrial use.