S-91273A414 M6 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional Corrosion Resistance: Crafted from 18-8 Stainless Steel, this screw offers superior protection against rust and corrosion, ensuring long-term reliability in harsh industrial environments.
• High Mechanical Strength: With a 70,000 psi tensile strength and 35,000 psi minimum shear strength, it provides robust, reliable fastening for demanding applications, reducing the risk of mechanical failure.
• Precision Fit & Assembly: The Class 5g6g thread fit ensures consistent, accurate engagement with mating parts, minimizing play and enhancing the stability of your assemblies.
• Secure & Easy Installation: The knurled hex socket head and 3 mm hex drive offer excellent grip and torque transmission, preventing tool slippage and speeding up the installation process.
• Durable Shoulder for Accurate Positioning: The 40 mm shoulder length with tight tolerances acts as a precise pivot or spacer, maintaining component alignment and reducing wear in rotating assemblies.
• Broad Regulatory Compliance: Being RoHS 3 and REACH compliant, this fastener meets stringent international environmental and safety standards, simplifying your supply chain compliance.
• Optimized for High-Stress Applications: A Rockwell B55 hardness rating ensures the screw maintains its form and thread integrity under heavy loads and repeated use.

Professional Applications & Engineering Value

This M6x1mm shoulder screw is engineered to solve critical alignment and durability challenges in precision industrial assemblies. The 18-8 Stainless Steel construction provides excellent resistance to oxidation and chemical exposure, making it ideal for machinery, automotive components, and electronic enclosures operating in corrosive or high-moisture environments. The 40mm shoulder serves as an integral locating dowel or bearing surface, precisely maintaining the position of gears, pulleys, or linkages, which minimizes eccentric movement and wear. The coarse pitch metric thread (M6x1mm) and Class 5g6g fit ensure rapid assembly and a secure, vibration-resistant connection. Combined with the knurled hex socket head for high-torque installation, this screw delivers reliable performance in applications requiring repeated disassembly and reassembly, enhancing maintenance efficiency and assembly lifespan.

Specification Summary & Compliance

This precision shoulder screw features an M6x1 mm coarse pitch metric thread with a Class 5g6g thread fit for consistent dimensional accuracy. The shoulder diameter is 6 mm with a tolerance of -0.04 to -0.01 mm, and the shoulder length is 40 mm with a tolerance of 0 to 0.25 mm, ensuring precise component positioning. Manufactured from 18-8 Stainless Steel with a hardness of Rockwell B55, it meets mechanical performance standards. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, affirming its adherence to environmental and safety requirements.