S-92957A120 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Easy manual installation with knurled thumb head and hex drive for tool-free or quick tool-assisted tightening
• Superior corrosion resistance from 18-8 stainless steel construction, ideal for harsh or washdown environments
• High mechanical strength with 70,000 psi tensile strength and Rockwell B83 hardness for reliable, heavy-duty use
• Precise component alignment ensured by the accurate 4mm shoulder diameter and controlled tolerances
• Secure, vibration-resistant fit due to Class 6g thread fit and coarse M3 x 0.5mm metric threading
• Regulatory compliance with RoHS 3 and REACH, meeting strict environmental and safety standards
• Durable, long-lasting performance combining material integrity with precision manufacturing

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to address common assembly challenges in industrial settings. The 18-8 stainless steel offers excellent resistance to rust and corrosion, making it suitable for machinery, electronics, and outdoor equipment. The knurled thumb head and hex drive allow for easy manual or tool-driven installation, reducing assembly time and improving ergonomics. The precise shoulder (4mm diameter) ensures accurate positioning of components like gears, pulleys, or spacers, minimizing misalignment and wear. With a coarse thread (M3 x 0.5mm) and Class 6g fit, it provides a secure hold even under vibration, ideal for automotive, manufacturing, and automation applications where reliability is critical.

Specification Summary & Compliance

This shoulder screw features a Class 6g thread fit per metric standards, with precise shoulder diameter tolerance of -0.025 to 0 mm and shoulder length tolerance of 0 to 0.05 mm. It is manufactured to comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of hazardous substances and safe for various industrial and consumer applications.