S-91390A659 M10 x 40 mm DIN 916, ISO 4029 Set Screws

Key Features & Benefits at a Glance

• Enhanced Durability - Made from high-strength alloy steel with Rockwell C45 hardness for superior wear resistance and long service life in demanding applications.
• Precise Fine Thread Engagement - M10 x 1.25mm fine pitch ensures secure, vibration-resistant fastening with minimal risk of loosening under dynamic loads.
• Space-Saving Headless Design - Hex drive allows for flush installation, ideal for applications where protruding fastener heads are not feasible.
• Consistent Performance - Manufactured to Class 5g6g thread fit tolerance, providing reliable, repeatable assembly with reduced risk of cross-threading.
• Cup Tip for Superior Grip - Concentrated point contact increases holding power, preventing slippage in shafts and collars.
• Global Standard Compliance - Conforms to DIN 916 and ISO 4029 specifications, ensuring interchangeability and quality assurance across international projects.
• Environmental Responsibility - RoHS 3 and REACH compliant, meeting stringent regulatory requirements for hazardous substance restrictions.

Professional Applications & Engineering Value

This M10 set screw delivers exceptional engineering value in applications requiring reliable axial positioning and torque transmission. The alloy steel construction with Rockwell C45 hardness provides excellent resistance to deformation under high clamping forces, making it ideal for securing gears, pulleys, and couplings in machinery. The fine metric thread (1.25mm pitch) offers superior vibration resistance compared to coarse threads, critical in dynamic industrial environments. The headless hex drive design enables installation in confined spaces while maintaining high torque capability. With its cup tip creating concentrated pressure points, this fastener prevents component rotation without damaging shaft surfaces, solving common slippage issues in power transmission systems.

Specification Summary & Compliance

This M10 x 1.25mm x 40mm set screw features Class 5g6g thread fit tolerance per ISO metric standards, ensuring precise dimensional accuracy. Manufacturing complies with DIN 916 and ISO 4029 specifications for dimensional and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting current environmental safety requirements for industrial components.