S-92981A625 M16 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional Load-Bearing Capacity – With 140,000 psi tensile strength and 84,000 psi minimum shear strength, this shoulder screw reliably handles high-stress applications without failure.
• Superior Wear & Corrosion Resistance – The black oxide finish on alloy steel provides durable protection against rust and wear, extending service life in harsh industrial environments.
• Precision Shoulder Fit for Accurate Alignment – A 20mm shoulder diameter with tight tolerance (-0.072 to -0.01 mm) ensures exact component positioning and reduces assembly misalignment.
• Secure, High-Torque Fastening – The 10mm hex socket drive allows for high tightening torque and prevents stripping, offering reliable fastening in confined spaces.
• Optimized for Heavy-Duty Applications – Coarse M16x2mm metric threads with Class 4g6g fit provide quick assembly and strong holding power in vibrating or dynamic loads.
• Consistent Performance Under Stress – Rockwell C32 hardness ensures the screw maintains its structural integrity and resists deformation under repeated use.
• Global Compliance & Safety Assurance – Meets ISO 7379 manufacturing standards and is RoHS 3 & REACH compliant, ensuring safe use in regulated industries worldwide.

Professional Applications & Engineering Value

This M16 shoulder screw is engineered to address critical alignment and load distribution challenges in precision machinery. The alloy steel construction, combined with a black oxide finish, offers excellent resistance to corrosion and abrasion, making it ideal for automotive assemblies, industrial robots, and heavy equipment where exposure to oils, moisture, and high stress is common. The 20mm shoulder diameter and 45mm shoulder length provide a stable pivot or spacer, reducing wear on moving parts and ensuring accurate positioning in jigs, fixtures, and conveyor systems. With its coarse thread pitch and Class 4g6g thread fit, it allows for rapid installation and reliable performance even in high-vibration environments, minimizing downtime and maintenance costs.

Specification Summary & Compliance

This shoulder screw adheres to ISO 7379 specifications, with precise dimensional tolerances: shoulder diameter tolerance of -0.072 to -0.01 mm and shoulder length tolerance of 0 to 0.25 mm. The metric thread follows Class 4g6g standards for consistent fit. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring environmental safety and regulatory acceptance in global markets.