S-91210A837 M8 x 25 mm DIN 914, ISO 4027 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated alloy steel construction for extended service life in harsh industrial environments
• Exceptional holding power provided by the 90° cone point design that creates secure, permanent fastening connections
• High strength durability with Rockwell C45 hardness rating ensuring reliable performance under heavy loads and vibration
• Precise thread engagement through Class 5g6g thread fit tolerance for consistent, secure fastening in metric applications
• Easy installation and removal with 4mm hex drive design allowing for efficient assembly and maintenance operations
• Industry-standard compatibility meeting DIN 914/ISO 4027 specifications for reliable interchangeability in global applications
• Environmental compliance assurance with RoHS 3 and REACH compliance for safe use in regulated industries

Professional Applications & Engineering Value

This M8 set screw delivers exceptional engineering value in demanding industrial applications where permanent fastening solutions are critical. The zinc-plated alloy steel construction provides reliable corrosion protection, while the 90° cone point design ensures maximum gripping force by creating a precise indentation in mating components. The Class 5g6g thread fit guarantees consistent engagement in metric coarse thread applications, preventing loosening under vibration and dynamic loads. Ideal for precision machinery, automotive assemblies, and industrial equipment, this headless set screw offers secure shaft positioning, pulley retention, and component alignment where flush mounting is essential. The 4mm hex drive facilitates straightforward installation in confined spaces, making it particularly valuable for maintenance and production applications requiring reliable, long-term fastening performance.

Specification Summary & Compliance

This metric set screw features M8 x 1.25mm coarse threading with Class 5g6g thread fit tolerance ensuring precise dimensional accuracy. Manufactured to DIN 914 and ISO 4027 standards, the fastener maintains consistent quality and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for use in regulated industries and international markets.