S-91390A707 M6 x 18 mm DIN 916 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with coarse 1 mm pitch threads that resist loosening under vibration and dynamic loads
• Exceptional durability from Rockwell C45 hardened alloy steel construction, providing excellent wear resistance and long service life
• Space-saving installation with headless hex drive design, ideal for applications with limited clearance
• Precise thread engagement ensured by Class 5g6g thread fit, delivering reliable fastening and consistent performance
• Secure anti-rotation locking through cup tip design that creates positive seating on shaft surfaces
• Easy installation and removal with standard 3 mm hex drive, compatible with common industrial tools
• Environmental compliance assurance meeting RoHS 3 and REACH standards for safe use in regulated industries

Professional Applications & Engineering Value

This M6 set screw delivers critical engineering value in applications requiring reliable shaft positioning and component security. The alloy steel construction with Rockwell C45 hardness provides exceptional resistance to deformation under high clamping forces, solving common issues of fastener failure in demanding environments. The headless hex drive design enables flush mounting in confined spaces where traditional fasteners cannot be used, while the coarse metric thread with Class 5g6g precision ensures rapid installation and consistent torque transmission. The cup tip configuration bites securely into shaft materials, preventing slippage in power transmission systems, coupling assemblies, and precision machinery where positional accuracy is paramount. DIN 916 compliance guarantees dimensional consistency across production runs, making this set screw an ideal choice for OEM applications requiring standardized, high-performance fastening solutions.

Specification Summary & Compliance

This precision fastener features M6 x 1 mm coarse metric threads with Class 5g6g thread fit tolerance for optimal engagement. Manufactured to DIN 916 specifications with 18 mm length and 3 mm hex drive, ensuring dimensional accuracy and interchangeability. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for use in regulated industries and international markets requiring certified components.