S-91273A332 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability
• High mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for demanding industrial applications
• Precise alignment and smooth rotation enabled by the 15mm shoulder with controlled diameter tolerance
• Easy, secure installation with a knurled hex socket head and 2mm drive, reducing tool slippage
• Reliable thread engagement with Class 5g6g metric coarse thread (M3 x 0.5mm) ensuring consistent fastening
• Durable performance backed by Rockwell B55 hardness for wear resistance and repeated use
• Compliance with environmental standards including RoHS 3 and REACH, meeting global regulatory requirements

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to address common assembly challenges in precision machinery, automation systems, and electronic enclosures. The 18-8 stainless steel material provides excellent resistance to rust and oxidation, crucial for maintaining integrity in humid or corrosive settings. The 15mm shoulder length acts as a precise pivot or spacer, reducing wear on moving parts and ensuring accurate component alignment. With a hex socket head and knurled texture, it allows for high-torque installation without cam-out, while the Class 5g6g thread and coarse pitch facilitate quick, secure fastening. Ideal for applications requiring repeated disassembly, this screw enhances equipment longevity and reduces maintenance downtime.

Specification Summary & Compliance

The screw features a Class 5g6g thread fit per metric standards, with shoulder diameter tolerance of -0.04 to -0.01 mm and shoulder length tolerance of 0 to 0.25 mm for precise dimensional control. It conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of restricted substances and safe for industrial use.