S-91210A042 M2.5 x 6 mm DIN 914, ISO 4027 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with a 90° cone point that bites into materials for secure, vibration-resistant fastening
• Exceptional strength and durability from high-grade alloy steel heat-treated to Rockwell C45 hardness
• Reliable, coarse-pitch threading (0.45mm) for faster installation and reduced risk of cross-threading in industrial applications
• Precision-engineered thread fit (Class 5g6g) ensuring consistent performance and easy assembly with mating components
• Space-saving headless design with a compact hex drive (1.3mm) for use in confined spaces and flush-mounted applications
• Guaranteed compliance and quality, meeting DIN 914/ISO 4027 standards and environmental regulations (RoHS 3, REACH)
• Right-hand thread direction for standard, intuitive installation in machinery and equipment

Professional Applications & Engineering Value

This M2.5 metric set screw is engineered to solve critical fastening challenges in precision assemblies. The alloy steel construction and Rockwell C45 hardness provide excellent resistance to wear and loosening under dynamic loads, making it ideal for securing gears, pulleys, and collars on shafts in automotive, aerospace, and machinery. The 90° cone point concentrates force for a firm grip, preventing component slippage, while the coarse thread and hex drive enable quick, tool-friendly installation. Fully compliant with DIN 914/ISO 4027, this hex headless set screw delivers reliable performance in high-stress environments where precision and durability are non-negotiable.

Specification Summary & Compliance

This set screw features a Class 5g6g thread fit per ISO standards, ensuring dimensional accuracy for consistent assembly. It is manufactured to meet DIN 914/ISO 4027 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in regulated and environmentally conscious industries.