S-91210A831 M8 x 8 mm DIN 914, ISO 4027 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with 120° cone point design that bites deep into materials for vibration-resistant fastening
• Exceptional durability provided by zinc-plated alloy steel construction with Rockwell C45 hardness rating
• Easy installation and removal through 4mm hex drive system that prevents tool slippage and damage
• Reliable thread engagement ensured by Class 5g6g thread fit for consistent performance in demanding applications
• Corrosion resistance from zinc plating that extends service life in various industrial environments
• Space-saving design with headless construction ideal for confined spaces and flush mounting requirements
• Quick assembly facilitated by coarse 1.25mm pitch threads that reduce installation time

Professional Applications & Engineering Value

This M8 set screw with 1.25mm coarse pitch delivers exceptional engineering value in industrial applications where reliable positioning and secure fastening are critical. The zinc-plated alloy steel construction combined with Rockwell C45 hardness ensures the fastener maintains its integrity under constant vibration and mechanical stress. The 120° cone point provides superior biting action into shafts, gears, and collars, preventing rotational slippage that can compromise machinery performance. The headless design and 4mm hex drive make it ideal for space-constrained assemblies while allowing sufficient torque application. These metric set screws are particularly valuable in precision equipment, automotive components, and manufacturing machinery where consistent clamping force and dimensional accuracy are paramount for operational safety and longevity.

Specification Summary & Compliance

This set screw maintains precise Class 5g6g thread fit tolerance according to DIN 914 and ISO 4027 standards, ensuring dimensional accuracy and reliable performance. The manufacturing process adheres to strict quality controls for metric thread specifications including M8 x 1.25mm coarse pitch with right-hand thread direction. The product is fully compliant with RoHS 3 (2015/863/EU) regulations and REACH (EC 1907/2006) requirements, confirming environmental responsibility and workplace safety standards. The 8mm length and cone point configuration meet international fastener specifications for industrial applications requiring precise component positioning and secure fastening solutions.