S-91390A260 M2.5 x 10 mm DIN 916, ISO 4029 Set Screws

Key Features & Benefits at a Glance

• Superior vibration resistance with cup tip design that bites into surfaces to prevent loosening under dynamic loads
• Exceptional durability achieved through Rockwell C45 hardness, maintaining performance in demanding applications
• Precise installation control with 1.3mm hex drive that prevents tool slippage and ensures proper torque application
• Reliable thread engagement with Class 5g6g thread fit that guarantees consistent fastening performance
• Optimized for industrial environments through alloy steel construction that resists wear and corrosion
• Quick assembly efficiency with coarse 0.45mm pitch threads that enable faster installation
• Headless space-saving design that allows flush mounting in confined spaces and rotating assemblies

Professional Applications & Engineering Value

This M2.5 alloy steel set screw delivers critical engineering solutions for precision assembly challenges. The headless design with hex drive provides secure fastening in space-constrained applications while maintaining accessibility for maintenance. The cup tip configuration creates positive mechanical locking that prevents component slippage in high-vibration environments like motors, gearboxes, and precision machinery. Manufactured from alloy steel with Rockwell C45 hardness, this fastener maintains structural integrity under repeated stress cycles. The metric coarse thread (0.45mm pitch) ensures rapid installation in production settings while the Class 5g6g thread fit guarantees consistent clamping force distribution. Ideal for securing gears, pulleys, and collars onto shafts in industrial equipment, automotive systems, and manufacturing machinery where reliability is paramount.

Specification Summary & Compliance

This metric set screw features precise M2.5 x 0.45mm coarse threads with Class 5g6g thread fit tolerance according to ISO metric standards. The 10mm length provides optimal engagement for most shaft-securing applications. Manufactured to DIN 916 and ISO 4029 specifications for dimensional accuracy and performance reliability. Fully compliant with RoHS 3 (2015/863/EU) environmental directives and REACH (EC 1907/2006) regulations, ensuring safe use in industrial and consumer products across global markets.