S-91390A121 M5 x 10 mm DIN 916, ISO 4029 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with cup tip design that bites into surfaces for secure, permanent fastening
• Exceptional durability from alloy steel construction with Rockwell C45 hardness to resist wear and deformation
• Precise thread engagement with Class 5g6g tolerance ensuring reliable fit and consistent clamping force
• Space-saving headless design allowing flush installation in confined spaces where protruding heads aren't feasible
• Easy installation and removal with 2.5mm hex drive providing positive torque transmission and tool access
• Reliable coarse threading (M5x0.8mm) offering quick assembly and reduced cross-threading risk in industrial applications
• Global compliance assurance meeting DIN 916/ISO 4029 standards plus RoHS 3 and REACH environmental regulations

Professional Applications & Engineering Value

This M5 set screw delivers critical engineering solutions where space constraints and vibration resistance are paramount. The alloy steel construction with Rockwell C45 hardness provides the necessary strength to prevent loosening under dynamic loads, while the cup tip design creates permanent seating by displacing material for superior grip. The headless hex drive configuration allows installation in recessed locations common in machinery, automotive components, and precision equipment. With metric coarse threading and Class 5g6g tolerance, this fastener ensures rapid assembly and reliable performance in high-stress industrial environments where dimensional accuracy and repeatability are essential.

Specification Summary & Compliance

This metric set screw features M5x0.8mm coarse right-hand thread with Class 5g6g thread fit per ISO standards. Manufactured to DIN 916/ISO 4029 specifications with 10mm length and 2.5mm hex drive. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for industrial use.