S-91273A326 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 10mm shoulder with tight length tolerance (±0.25mm), reducing assembly errors and improving product quality.
• High mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness, ensuring reliable performance under load and vibration.
• Secure, slip-resistant installation thanks to the knurled head and 2mm hex socket drive, allowing for high torque application and easy maintenance.
• Consistent thread engagement with Class 5g6g fit and M3x0.5 coarse pitch, facilitating quick assembly and reducing cross-threading risks.
• Compliance with global standards including RoHS 3 and REACH, ensuring safety and environmental responsibility for international supply chains.
• Durable shear resistance with a minimum shear strength of 35,000 psi, providing robust performance in dynamic and high-stress applications.

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 offers excellent resistance to corrosion and oxidation, making it suitable for automotive, electronics, and machinery sectors where exposure to moisture or chemicals is common. The 10mm shoulder length with controlled tolerance ensures accurate positioning of components like gears, bearings, and pulleys, minimizing wear and misalignment. Combined with a Class 5g6g thread fit and coarse pitch, it enables rapid, secure fastening in high-volume production lines. The hex socket drive and knurled head enhance grip during installation, reducing tool slippage and streamlining maintenance workflows. Ideal for applications requiring repeated disassembly, this screw delivers long-term reliability and reduces downtime in industrial settings.

Specification Summary & Compliance

This metric shoulder screw adheres to precise dimensional standards, including a Class 5g6g thread fit for consistent engagement and a shoulder diameter tolerance of -0.04 to -0.01 mm. Manufactured from 18-8 stainless steel, 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. The design conforms to common metric threading and drive specifications, supporting interoperability in engineered systems.