S-91390A107 M3 x 16 mm DIN 916, ISO 4029 Set Screws

Key Features & Benefits at a Glance

• Exceptional holding power with Rockwell C45 hardness alloy steel construction, providing reliable resistance to loosening under vibration and load
• Precise hex drive design (1.5 mm) enables secure tool engagement and high torque application without cam-out, reducing installation time and tool wear
• Headless, flush-mount profile allows for unobtrusive installation in confined spaces where protruding fastener heads are not feasible
• Coarse M3 x 0.5 mm thread with Class 5g6g fit ensures rapid assembly and robust engagement in a wide range of materials
• Cup point tip bites firmly into shafts and components, creating a permanent, slip-resistant connection for critical assemblies
• Full compliance with DIN 916 / ISO 4029 standards guarantees dimensional accuracy and interchangeability in global engineering applications
• RoHS 3 and REACH compliant for use in regulated industries, ensuring environmental safety and material sustainability

Professional Applications & Engineering Value

This M3 set screw is engineered to address common industrial challenges such as component slippage, space constraints, and the need for repeatable, high-strength fastening. The alloy steel material, hardened to Rockwell C45, provides excellent shear strength and durability, making it ideal for securing gears, pulleys, and collars on rotating shafts in machinery and automotive systems. The headless design and hex drive allow for flush installation in tight assemblies, while the cup tip ensures maximum grip without damaging the mating surface. With its metric coarse thread and standardized DIN 916 / ISO 4029 dimensions, this screw offers reliable performance in precision equipment, automation systems, and other demanding industrial applications where vibration resistance and long-term reliability are critical.

Specification Summary & Compliance

This set screw features M3 x 0.5 mm coarse threads with a Class 5g6g thread fit per ISO standards, ensuring precise dimensional tolerance and compatibility. It is manufactured in accordance with DIN 916 (ISO 4029) specifications for headless set screws and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for use in international markets and sensitive applications.