S-91273A797 M5 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel and black oxide finish, ideal for harsh industrial environments.
• Precise alignment and reduced wear due to the 20mm shoulder with tight diameter tolerance (-0.04 to -0.01 mm), ensuring accurate component positioning.
• High mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for reliable performance under heavy loads.
• Easy installation and removal with a hex socket drive (2.5 mm) and knurled head for improved grip and torque application.
• Consistent thread quality with Class 5g6g fit and M5x0.8 coarse thread, providing secure fastening and vibration resistance.
• Durable and long-lasting construction featuring Rockwell B55 hardness for enhanced wear resistance in repetitive use.
• Compliance with environmental standards, including RoHS 3 and REACH, ensuring safe and sustainable use in global markets.

Professional Applications & Engineering Value

This precision M5 shoulder screw is engineered to address common industrial challenges such as misalignment and component wear in machinery. Made from 18-8 stainless steel with a black oxide finish, it offers excellent corrosion resistance, making it suitable for applications in automotive, electronics, and manufacturing where exposure to moisture or chemicals is a concern. The 20mm shoulder length provides a stable bearing surface, reducing stress on threaded sections and extending the life of assembled parts. With a hex drive and knurled head, it allows for quick, secure installation in tight spaces, improving assembly efficiency. Ideal for use in precision shoulder fasteners for pivots, axles, and guides, this screw ensures reliable performance in high-vibration environments, supporting seamless operations in industrial applications.

Specification Summary & Compliance

This shoulder screw adheres to metric system standards with precise dimensions: M5x0.8 coarse thread, 9.5mm thread length, and 20mm shoulder length (tolerance 0 to 0.25 mm). Threads conform to Class 5g6g fit for consistent accuracy. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for global industrial use.