S-92981A812 M10 ASTM A108 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability & Corrosion Resistance – Black oxide finish provides superior protection against rust and wear in demanding industrial environments.
• High Tensile Strength for Demanding Applications – 140,000 psi tensile strength ensures reliable performance under heavy loads and vibration.
• Precision Shoulder for Accurate Alignment – 50mm shoulder with controlled diameter tolerance maintains exact component positioning.
• Secure Hex Drive Installation – 6mm hex socket head allows for high-torque tightening without stripping or cam-out.
• Knurled Head for Improved Grip – Facilitates easier manual handling and adjustment during assembly.
• Consistent Thread Performance – Class 5g6g metric thread with 1.5mm coarse pitch ensures easy engagement and reliable fastening.
• Compliance with Industry Standards – Meets ASTM A108 specifications and is RoHS/REACH compliant for global regulatory acceptance.

Professional Applications & Engineering Value

This M10 shoulder screw is engineered to address critical alignment and load-bearing challenges in precision assemblies. The alloy steel construction, combined with Rockwell C32 hardness, provides exceptional resistance to shear and fatigue, making it ideal for machinery, automotive, and automation systems where repetitive motion and high stress are common. The 50mm shoulder length acts as a precise pivot or spacer, reducing wear on moving parts and maintaining alignment in rotational mechanisms and fixturing applications. The black oxide finish not only enhances corrosion resistance but also minimizes galling, extending service life in harsh operational conditions. With its coarse thread pitch and hex drive, installation is swift and secure, reducing assembly time while ensuring consistent clamp load.

Specification Summary & Compliance

This shoulder screw features a Class 5g6g thread fit per ISO metric standards, ensuring dimensional accuracy and interchangeability. Shoulder diameter tolerance is maintained between -0.072 to -0.01 mm, and shoulder length tolerance from 0 to 0.25 mm for precise application fit. Manufactured in compliance with ASTM A108 for material consistency, and fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting use in environmentally sensitive and international markets.