S-92981A769 M2 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 Loads – Alloy steel construction with 140,000 psi tensile strength ensures reliable performance under high stress.
• Precision Thread Fit for Secure Fastening – Class 5g6g thread fit guarantees tight, vibration-resistant connections in metric assemblies.
• Secure, Non-Slip Installation – Hex socket drive with 1.5 mm drive size and knurled head texture allows for firm tool grip and controlled torque application.
• Accurate Alignment & Component Spacing – Shoulder diameter of 3 mm and shoulder length of 6 mm provide consistent positioning for moving parts or bearings.
• Consistent Hardness for Long Service Life – Rockwell C32 hardness ensures the screw maintains its structural integrity through repeated use.
• Broad Industrial Compliance – Meets ASTM A108 specifications and is RoHS 3 & REACH compliant, ensuring safety and regulatory adherence.

Professional Applications & Engineering Value

This M2 shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. The alloy steel core, combined with a black oxide finish, resists corrosion and mechanical wear, making it ideal for electronics, machinery, and automotive components where exposure to oils or moisture is common. The hex socket drive and knurled head ensure secure installation without slippage, while the Class 5g6g thread fit and coarse M2x0.4mm thread provide reliable fastening in high-vibration settings. Its shoulder design (3 mm diameter, 6 mm length) offers exact component spacing, reducing assembly time and improving operational accuracy in industrial applications.

Specification Summary & Compliance

This shoulder screw features a Class 5g6g thread fit with precise tolerances (shoulder diameter: -0.072 to -0.01 mm; shoulder length: 0 to 0.25 mm), adhering to metric thread standards. It is manufactured in compliance with ASTM A108 and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring it is free from hazardous substances for safe use in global markets.