S-91390A430 M4 x 30 mm DIN 916, ISO 4029 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with cup point tip design that bites into surfaces for secure, vibration-resistant fastening
• Exceptional durability from Rockwell C45 hardened alloy steel construction that resists wear and deformation
• Precise thread engagement with Class 5g6g thread fit ensuring reliable performance in demanding applications
• Easy installation and removal using standard 2mm hex tools for efficient maintenance and assembly
• Optimized for coarse threading with M4 x 0.7mm metric thread for faster installation and reduced cross-threading risk
• Space-saving headless design that allows flush mounting in confined spaces and rotating assemblies
• Regulatory compliance assurance meeting DIN 916/ISO 4029 standards plus RoHS 3 and REACH environmental directives

Professional Applications & Engineering Value

This M4 set screw delivers exceptional engineering value in industrial applications where vibration resistance and secure positioning are critical. The cup point tip creates permanent indentations in mating surfaces, preventing loosening under dynamic loads - making it ideal for precision machinery, gear assemblies, and shaft collars. The alloy steel construction with Rockwell C45 hardness ensures the screw maintains its grip without deforming, even under repeated adjustment cycles. The 2mm hex drive provides sufficient torque transmission while the headless design allows installation in space-constrained applications where protruding fasteners are impractical. With coarse metric threading and Class 5g6g thread fit, these set screws offer reliable performance in both production and maintenance scenarios across various industrial sectors.

Specification Summary & Compliance

This metric set screw features precise M4 x 0.7mm coarse threading with Class 5g6g thread fit according to ISO tolerance standards, ensuring consistent performance across applications. Manufactured to meet DIN 916/ISO 4029 specifications for dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations for chemical safety, making it suitable for use in regulated industries and international markets.