S-92981A745 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
- Precision shoulder guidance with 25mm length and tight ±0.25mm tolerance ensures accurate component alignment and reduces assembly vibration.
- High-strength alloy steel construction delivers 140,000 psi tensile strength and Rockwell C32 hardness for reliable performance under heavy loads.
- Corrosion-resistant black oxide finish extends service life in demanding industrial environments and prevents seizing.
- Class 5g6g thread fit with M3x0.5 coarse pitch enables quick assembly while maintaining secure fastening integrity.
- Hex socket drive design with 2mm key size allows high-torque installation in confined spaces without slippage.
- ISO 7379 compliance guarantees dimensional consistency and interchangeability across global manufacturing applications.
- RoHS 3 and REACH compliance ensures environmental safety and regulatory acceptance for international supply chains.
Professional Applications & Engineering Value
These M3 shoulder screws solve critical alignment challenges in precision assemblies where rotational clearance and axial positioning are paramount. The alloy steel construction with black oxide finish withstands repetitive motion and exposure to industrial contaminants, making them ideal for robotics linkages, conveyor system guides, and automated fixture plates. The 25mm shoulder length with controlled diameter tolerance acts as a precise pivot or spacer, eliminating the need for additional bushings while the hex socket drive ensures reliable installation in high-density equipment layouts. This combination of metric thread specifications and robust material properties delivers lasting stability in dynamic mechanical systems.
Specification Summary & Compliance
Manufactured to ISO 7379 standards with Class 5g6g thread fit and shoulder diameter tolerance of -0.072 to -0.01 mm. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Mechanical properties include 140,000 psi tensile strength and 84,000 psi minimum shear strength validated through Rockwell C32 hardness testing.
