S-91210A420 M8 x 12 mm DIN 914, ISO 4027 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with 90° cone point design that bites deeply into materials for maximum resistance to vibration and loosening
• Exceptional durability provided by alloy steel construction with Rockwell C45 hardness rating for long service life in demanding applications
• Reliable installation through 4mm hex drive that prevents tool slippage and ensures proper torque application
• Optimized thread engagement with Class 5g6g thread fit that maintains consistent clamping force while accommodating manufacturing tolerances
• Quick assembly enabled by coarse 1.25mm pitch threads that reduce installation time compared to fine-pitch alternatives
• Industry-standard compatibility through compliance with DIN 914 and ISO 4027 specifications for interchangeability across global applications
• Environmental compliance with RoHS 3 and REACH regulations ensuring safe use in various industrial sectors

Professional Applications & Engineering Value

These M8 set screws deliver exceptional engineering value in applications requiring precise component positioning and vibration resistance. The alloy steel construction combined with Rockwell C45 hardness provides the ideal balance between strength and toughness, preventing deformation under high clamping loads. The headless design with hex drive allows for flush mounting in confined spaces while maintaining accessibility for adjustment or removal. The 90° cone point creates concentrated pressure points that securely lock pulleys, gears, and collars onto shafts without damaging the mating surface. Manufactured to DIN 914/ISO 4027 standards with Class 5g6g thread fit, these metric set screws ensure consistent performance in precision machinery, automotive assemblies, and industrial equipment where reliable fastening is critical to operational safety and longevity.

Specification Summary & Compliance

This M8 x 1.25mm x 12mm set screw features precision metric coarse threads with Class 5g6g thread fit per ISO tolerance standards, ensuring consistent dimensional accuracy across production batches. The product fully complies with DIN 914 and ISO 4027 manufacturing specifications for dimensional and mechanical properties. Environmental compliance is verified through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) certifications, making these fasteners suitable for global industrial applications with strict regulatory requirements.