S-91210A225 M5 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 into materials for maximum resistance against loosening under vibration and torque
• Exceptional durability provided by alloy steel construction with Rockwell C45 hardness, ensuring long service life in demanding industrial environments
• Precise installation control through 2.5mm hex drive that prevents tool slippage and maintains consistent torque application
• Reliable thread engagement with Class 5g6g thread fit and coarse 0.8mm pitch, enabling quick assembly and secure fastening in various materials
• Industry-standard compatibility meeting DIN 914 and ISO 4027 specifications, ensuring interchangeability and performance consistency
• Environmental compliance assurance with RoHS 3 and REACH regulations, making them suitable for global industrial supply chains
• Space-saving design as a headless set screw that sits flush with or below the surface for compact assemblies

Professional Applications & Engineering Value

This M5 set screw delivers critical engineering solutions where vibration resistance and precise component positioning are paramount. The alloy steel construction with Rockwell C45 hardness provides the necessary strength to withstand cyclic loading in machinery, automotive, and manufacturing equipment. The 90° cone point creates permanent seating marks in shafts and hubs, preventing axial movement in pulley systems, gears, and collars. With coarse thread spacing and Class 5g6g thread fit, installation is efficient while maintaining secure engagement in both soft and hard materials. The hex headless design allows for flush mounting in space-constrained applications, making these metric set screws ideal for precision assemblies requiring reliable, tamper-resistant fastening solutions.

Specification Summary & Compliance

This set screw maintains precision thread tolerances with Class 5g6g fit per metric standards, ensuring consistent performance across applications. Manufacturing conforms to DIN 914 and ISO 4027 specifications for dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, containing no restricted substances above threshold limits. The combination of M5 thread size, 0.8mm pitch, and 12mm length provides standardized dimensions for reliable interchangeability in industrial fastening systems.