S-90323A494 M8 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments.
• Precise alignment and reduced wear due to the accurately machined 10mm shoulder diameter and 45mm shoulder length with tight tolerances.
• High strength and durability offering Rockwell B95 hardness and 80,000 psi tensile strength for reliable performance under load.
• Easy installation in confined spaces with a low-profile socket head and 5mm hex drive, minimizing tool clearance requirements.
• Consistent thread engagement ensured by Class 6g thread fit and coarse M8x1.25 metric thread for quick assembly.
• Compliance with environmental standards including RoHS 3 and REACH, supporting sustainable and safe manufacturing practices.
• Versatile right-hand thread design with coarse spacing for efficient fastening in various mechanical applications.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to address common challenges in precision assembly, such as misalignment and component wear. The 18-8 stainless steel material, combined with a passivated finish, provides excellent resistance to corrosion and oxidation, making it suitable for demanding environments like machinery, automotive systems, and electronic enclosures. The low-profile socket head with a 5mm hex drive allows for secure tightening in tight spaces, while the precisely manufactured shoulder (10mm diameter, 45mm length) ensures accurate positioning of moving parts, reducing vibration and extending service life. Its Class 6g thread fit and coarse metric thread facilitate quick, reliable fastening, ideal for high-volume production lines where efficiency and durability are critical.

Specification Summary & Compliance

This shoulder screw features a Class 6g thread fit with M8x1.25 coarse metric threading, ensuring dimensional accuracy per standard specifications. The shoulder diameter is held to a tolerance of -0.025 to 0 mm, and the shoulder length to 0 to 0.05 mm, guaranteeing precise assembly. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial use.