S-91390A097 M3 x 3 mm DIN 916, ISO 4029 Set Screws

Key Features & Benefits at a Glance

• Maximum Durability: High-strength alloy steel construction with Rockwell C45 hardness ensures exceptional wear resistance and long service life in demanding applications.
• Secure, Non-Slip Fastening: The headless hex drive design with a 1.5 mm key allows for high-torque installation and a flush finish, preventing snagging and tampering.
• Reliable Thread Engagement: Class 5g6g thread fit with a coarse 0.5 mm pitch provides excellent vibration resistance and ensures consistent, secure clamping force.
• Positive Component Locking: The cup tip design concentrates pressure on a small area, creating a strong bite and preventing shaft or component slippage.
• Global Standard Compliance: Manufactured to DIN 916 / ISO 4029 specifications, guaranteeing dimensional accuracy and interchangeability for international projects.
• Safe for Regulated Industries: Full compliance with RoHS 3 and REACH regulations makes this screw suitable for use in electronics and other sensitive applications.
• Space-Saving Design: The compact, headless form factor and 3 mm length are ideal for applications with limited clearance.

Professional Applications & Engineering Value

This M3 x 0.5 mm metric set screw is engineered to solve critical challenges in precision assembly. Its headless hex drive and compact 3 mm length are perfect for confined spaces in machinery, automotive components, and electronic enclosures, providing a secure, flush-mount solution. The alloy steel material, hardened to Rockwell C45, delivers the necessary strength to resist loosening under vibration and dynamic loads, a common failure point in industrial equipment. The cup tip ensures a positive lock on shafts and gears, preventing axial movement and maintaining precise alignment. This combination of a robust Class 5g6g coarse thread and durable material makes it an indispensable component for engineers seeking reliability in set screw applications for permanent or semi-permanent fastening.

Specification Summary & Compliance

This product adheres to strict dimensional and performance standards, including the DIN 916 and ISO 4029 specifications for headless set screws. The metric thread is manufactured to a Class 5g6g tolerance, ensuring precision fit and function. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in environmentally conscious and regulated industries.