S-91390A129 M6 x 12 mm DIN 916, ISO 4029 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with cup tip design that bites into surfaces for secure, non-slip fastening in dynamic applications
• Exceptional durability from alloy steel construction with Rockwell C45 hardness, resisting wear and deformation under heavy loads
• Precise thread engagement with Class 5g6g fit, ensuring reliable performance and reduced risk of cross-threading during installation
• Optimized installation efficiency featuring 3 mm hex drive for easy torque application in confined spaces without head protrusion
• Industry-standard compatibility with coarse M6x1 mm right-hand threads, making it interchangeable across metric machinery and equipment
• Long-term operational safety with full compliance to RoHS 3 and REACH regulations, eliminating hazardous substance risks
• Reliable performance in high-vibration environments due to headless design and coarse thread pitch maintaining clamp force

Professional Applications & Engineering Value

This M6 set screw delivers critical engineering solutions where space constraints and vibration resistance are paramount. The alloy steel material, hardened to Rockwell C45, prevents stripping and maintains thread integrity under repetitive stress, making it ideal for securing gears, pulleys, and collars on rotating shafts. The cup tip concentrates pressure to create a permanent dimple, eliminating slippage in industrial machinery. Combined with the hex drive and headless design, it allows flush mounting in tight assemblies while meeting DIN 916/ISO 4029 specifications for dimensional consistency. This screw addresses common failure points like loosening and material fatigue, ensuring reliable performance in automation systems, motor mounts, and precision equipment.

Specification Summary & Compliance

Manufactured to Class 5g6g thread fit per ISO metric standards, ensuring precise tolerance for secure fastening. The screw adheres to DIN 916 (ISO 4029) dimensional requirements for headless set screws with hex socket drive. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted substances. Key specifications include M6x1 mm coarse right-hand thread, 12 mm length, and 3 mm hex drive, providing consistent performance in regulated industrial environments.