S-92981A743 M3 ISO 7379 Shoulder Screws
Shoulder Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Enhanced Durability & Corrosion Resistance – Black oxide finish provides superior protection against rust and wear in harsh industrial environments
- Precision Alignment & Secure Positioning – 4mm shoulder diameter with tight tolerance ensures accurate component location and prevents rotation
- High Load-Bearing Capacity – Alloy steel construction delivers 140,000 psi tensile strength and 84,000 psi shear strength for demanding applications
- Secure Hex Drive Installation – 2mm hex socket head allows for high-torque tightening without stripping or cam-out
- Optimized Thread Engagement – Class 5g6g thread fit with M3 x 0.5mm coarse pitch ensures reliable fastening and vibration resistance
- Extended Service Life – Rockwell C32 hardness maintains structural integrity under repeated stress and load cycles
- Global Compliance Assurance – Meets ISO 7379 manufacturing standards with RoHS 3 and REACH environmental compliance
Professional Applications & Engineering Value
This M3 shoulder screw delivers critical engineering solutions where precision alignment and high-strength fastening are essential. The alloy steel construction with black oxide finish provides exceptional corrosion resistance for machinery, automation systems, and precision instruments. The 15mm shoulder length acts as a precise pivot or spacer, eliminating the need for additional bushings in assemblies. The hex drive socket head enables flush mounting in confined spaces while the Class 5g6g thread fit ensures secure engagement in metal-to-metal applications. These features make it ideal for CNC equipment, robotic arms, and precision mechanical assemblies where vibration resistance and dimensional accuracy are critical.
Specification Summary & Compliance
Manufactured to ISO 7379 standards with Class 5g6g thread tolerance for precision fit. Shoulder diameter maintains -0.072 to -0.01 mm tolerance with shoulder length tolerance of 0 to 0.25 mm. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The metric coarse thread (M3 x 0.5mm) ensures compatibility with standard industrial components worldwide.
