S-92981A786 M5 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 harsh industrial environments.
• High Tensile Strength for Demanding Applications: Alloy steel construction with 140,000 psi tensile strength ensures reliable performance under high stress.
• Precision Thread Fit for Secure Assembly: Class 5g6g thread fit guarantees consistent, vibration-resistant fastening in metric assemblies.
• Easy Installation & Removal: Hex socket drive (3mm) with knurled head offers excellent grip and torque application, reducing installation time.
• Accurate Shoulder Positioning: Tight shoulder diameter tolerance (-0.072 to -0.01 mm) ensures precise alignment in machinery and pivoting applications.
• Compliance with Industry Standards: Meets ASTM A108 specifications and is RoHS 3/REACH compliant for safe, regulated use.
• Coarse Thread for Quick Assembly: M5x0.8mm coarse thread design allows for faster installation and reduced cross-threading risks.

Professional Applications & Engineering Value

This M5 shoulder screw is engineered to address critical alignment and durability challenges in precision machinery, automotive, and automation systems. The alloy steel material, hardened to Rockwell C32, provides exceptional resistance to shear and tensile forces, preventing failure in high-load scenarios. The black oxide finish enhances corrosion resistance, making it ideal for environments exposed to moisture or chemicals. With a 12mm shoulder length and precise diameter tolerances, it acts as a reliable pivot or spacer, reducing wear on moving parts. The hex drive and knurled head facilitate easy handling in confined spaces, streamlining assembly processes while maintaining Class 5g6g thread fit accuracy for secure, long-term fastening.

Specification Summary & Compliance

This shoulder screw features a metric thread with M5x0.8mm coarse pitch and Class 5g6g thread fit for standard industrial tolerance. Shoulder dimensions include a diameter of 6.5 mm (tolerance: -0.072 to -0.01 mm) and length of 12 mm (tolerance: 0 to 0.25 mm). It complies with ASTM A108 manufacturing standards and is verified to be RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring environmental safety and regulatory adherence.