S-91273A482 M12 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ensuring long-term reliability in harsh industrial environments.
• High mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for demanding applications requiring robust fastening.
• Precise alignment and smooth rotation enabled by the 120mm shoulder with tight diameter tolerance (-0.04 to -0.01 mm), reducing wear and misalignment.
• Secure and efficient installation with a knurled hex socket head and 6mm drive, providing excellent grip and torque transmission.
• Accurate and reliable thread engagement due to Class 5g6g thread fit, ensuring consistent performance in metric assemblies.
• Compliance with environmental regulations including RoHS 3 and REACH, making it safe for various global industrial uses.
• Durable and wear-resistant with Rockwell B55 hardness, maintaining integrity under repeated loads and vibrations.

Professional Applications & Engineering Value

This M12 shoulder screw is engineered to address critical alignment and durability challenges in precision machinery. The 18-8 stainless steel material provides excellent resistance to corrosion and oxidation, ideal for environments exposed to moisture or chemicals. The 120mm shoulder length with minimal diameter tolerance ensures precise component positioning, reducing friction and extending the life of moving parts in assemblies like rotating shafts, pivots, and guides. The knurled hex socket head allows for secure tool engagement, preventing slippage during high-torque installation. Commonly used in automation, automotive, and manufacturing equipment, this metric shoulder screw delivers reliable performance where exact spacing and robust fastening are essential, minimizing downtime and maintenance costs.

Specification Summary & Compliance

This shoulder screw adheres to metric thread standards with M12x1.75 coarse threads and a Class 5g6g thread fit for precise dimensional accuracy. The shoulder diameter tolerance is -0.04 to -0.01 mm, and shoulder length tolerance is 0 to 0.25 mm, ensuring consistent fit in engineering applications. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming it is free of hazardous substances and suitable for industrial and export markets.