S-91210A789 M3 x 5 mm DIN 914, ISO 4027 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc plating on alloy steel, extending service life in demanding industrial environments
• Exceptional holding power from the 90° cone point design that bites securely into mating surfaces
• High-strength performance with Rockwell C45 hardness, resisting deformation under heavy loads
• Precise thread engagement with Class 5g6g fit, ensuring reliable fastening without cross-threading
• Easy installation and removal using standard 1.5 mm hex keys, reducing assembly time
• Optimized for coarse threading with 0.5 mm pitch, providing faster installation in softer materials
• Compliance with international standards including DIN 914 and ISO 4027, guaranteeing interchangeability and quality

Professional Applications & Engineering Value

This M3 set screw delivers critical engineering value in applications requiring secure component positioning against rotational or axial movement. The zinc-plated alloy steel construction provides excellent corrosion protection for machinery, automotive assemblies, and electronic enclosures exposed to harsh conditions. Its headless design and cone point with 90° angle create concentrated pressure points that prevent slippage in pulleys, gears, and collars. The Class 5g6g thread fit and coarse metric thread ensure rapid installation while maintaining vibration resistance in high-stress environments. This combination of precision set screw features solves common industrial challenges of component misalignment and loosening under dynamic loads.

Specification Summary & Compliance

This metric set screw features M3 x 0.5 mm thread specifications with Class 5g6g thread fit tolerance per ISO standards. Manufacturing conforms to DIN 914 and ISO 4027 specifications for dimensional accuracy and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.