S-91273A334 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and extended service life
• Precise component alignment enabled by the 17mm shoulder with controlled tolerances, reducing assembly errors and improving product quality
• High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness, ensuring reliable fastening under mechanical stress
• Secure, slip-resistant installation thanks to the knurled head and 2mm hex socket drive, allowing for high-torque applications
• Consistent thread engagement with Class 5g6g metric coarse thread (M3x0.5), facilitating quick assembly and vibration resistance
• Regulatory compliance assurance meeting RoHS 3 and REACH standards, supporting global supply chain and environmental requirements
• Versatile right-hand thread design compatible with standard metric components, streamlining inventory and replacement processes

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. The 18-8 stainless steel material provides excellent resistance to oxidation and chemical exposure, making it suitable for electronics, machinery, and automotive applications where reliability is paramount. The 17mm shoulder length with tight diameter tolerance acts as a precise pivot or spacer, eliminating misalignment in rotating parts like gears and pulleys. Combined with the coarse thread pitch and Class 5g6g thread fit, it ensures rapid installation and maintains clamp load under dynamic loads. The knurled socket head enhances grip during tool engagement, reducing cam-out risks in high-vibration environments, thereby minimizing downtime and maintenance costs.

Specification Summary & Compliance

The screw features a Class 5g6g thread fit per metric standards, with a 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 adherence to environmental and safety guidelines for industrial fasteners.