S-94361A585 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability & Corrosion Resistance: Black oxide finish provides superior protection against rust and wear, extending service life in demanding industrial environments.
• High Tensile Strength for Demanding Applications: Made from alloy steel with a tensile strength of 140,000 psi, ensuring reliable performance under high stress and load conditions.
• Precise Alignment & Secure Fit: Features a 4mm shoulder diameter with tight tolerance (-0.072 to -0.01 mm) for accurate component positioning and reduced assembly play.
• Easy Installation & Non-Slip Grip: Knurled hex socket head with a 2mm drive size allows for secure tool engagement and efficient tightening, even in confined spaces.
• Consistent Thread Performance: Class 6g thread fit with M3 x 0.5mm coarse pitch ensures easy engagement and reliable fastening in various materials.
• Hardened for Longevity: Rockwell C32 hardness provides excellent resistance to deformation and wear over repeated use cycles.
• Compliant with Global Standards: Meets RoHS 3 and REACH regulations, ensuring safety and environmental responsibility in your supply chain.

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. The alloy steel construction and black oxide finish deliver exceptional resistance to corrosion and mechanical stress, making it ideal for machinery, automotive components, and electronic enclosures where reliability is paramount. The precision shoulder with a diameter of 4mm and length of 4mm ensures exact part location, minimizing misalignment and vibration issues. Combined with a knurled hex socket head and Class 6g thread fit, it simplifies installation in tight spaces while maintaining consistent torque performance. This screw is a trusted solution for applications requiring secure fastening, precise axial positioning, and long-term operational integrity in industrial settings.

Specification Summary & Compliance

This shoulder screw adheres to metric system standards with an M3 thread size, 0.5mm coarse pitch, and Class 6g thread fit for consistent dimensional accuracy. The shoulder diameter tolerance is tightly controlled at -0.072 to -0.01 mm, and shoulder length tolerance is 0 to 0.25 mm, ensuring precise assembly. Manufactured from alloy steel with a hardness of Rockwell C32 and tensile strength of 140,000 psi, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental and safety standards are met for industrial use.