S-91390A111 M4 x 5 mm DIN 916, ISO 4029 Set Screws

Key Features & Benefits at a Glance

• Exceptional holding power through Rockwell C45 hardness alloy steel construction, resisting deformation under high stress
• Secure, flush mounting with headless design and cup tip for minimal protrusion and superior grip on mating surfaces
• Reliable installation and removal with a 2mm hex drive, providing excellent torque transmission and reducing tool slippage
• Optimized thread engagement with coarse M4 x 0.7mm threads and Class 5g6g fit for faster assembly and vibration resistance
• Broad industrial compatibility as a right-hand thread metric set screw, ensuring interchangeability with standard components
• Long-term operational integrity backed by compliance with DIN 916/ISO 4029 standards, guaranteeing dimensional accuracy and performance
• Environmentally responsible sourcing with full adherence to RoHS 3 and REACH regulations, supporting sustainable manufacturing practices

Professional Applications & Engineering Value

This M4 set screw is engineered to address critical challenges in precision assembly and machinery. The alloy steel composition, hardened to Rockwell C45, provides superior resistance to wear and shear forces, making it ideal for securing gears, pulleys, and collars on shafts in high-vibration environments. The headless design and cup tip ensure a flush fit, preventing interference in compact spaces while maximizing clamping force. With its hex drive and coarse thread spacing, it enables quick, secure fastening in automated or manual production lines, reducing installation time and maintenance needs. Fully compliant with DIN 916 and ISO 4029, this metric set screw delivers reliable performance in automotive, aerospace, and industrial equipment applications.

Specification Summary & Compliance

This set screw features a Class 5g6g thread fit per ISO metric standards, ensuring precise dimensional tolerances for consistent performance. It is manufactured in accordance with DIN 916 and ISO 4029 specifications, covering material, mechanical properties, and design. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted substances and supporting environmental safety in industrial use.