S-91210A038 M2.5 x 3 mm DIN 914, ISO 4027 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with a 120° cone point angle that bites into mating surfaces, preventing component slippage and maintaining precise alignment.
• Exceptional durability and wear resistance thanks to the high-strength alloy steel construction and Rockwell C45 hardness, ensuring a long service life in demanding applications.
• Reliable and secure fastening achieved with a Class 5g6g thread fit, providing optimal engagement and vibration resistance in coarse pitch applications.
• Streamlined installation in confined spaces due to the headless, hex drive design, allowing for a flush finish and easy access with a 1.3 mm hex key.
• Guaranteed dimensional precision and interchangeability through compliance with DIN 914 and ISO 4027 standards, ensuring consistent performance.
• Safe for use in regulated environments as it is RoHS 3 and REACH compliant, meeting strict international environmental and safety standards.
• Versatile right-hand metric thread (M2.5 x 0.45 mm) designed for easy integration with standard metric components across various industries.

Professional Applications & Engineering Value

This alloy steel set screw is engineered to solve critical challenges in precision assembly and machinery. The headless design with a hex socket is ideal for applications where space is limited and a flush surface is required, preventing interference with moving parts. The 120° cone point concentrates force to create a secure, permanent lock on shafts, gears, and collars, effectively resisting loosening under high vibration—a common industrial pain point. Manufactured from high-strength alloy steel and hardened to Rockwell C45, it provides the necessary toughness to withstand shear forces and repeated adjustments without deforming. Its compliance with DIN 914 and ISO 4027 guarantees that engineers and procurement specialists receive a component with verified dimensional accuracy and reliable performance in automation, electronics, and precision tooling applications.

Specification Summary & Compliance

This M2.5 x 0.45 mm x 3 mm set screw features a Class 5g6g thread fit as per ISO metric standards, ensuring precise tolerances for reliable assembly. The manufacturing and material specifications strictly adhere to DIN 914 ISO 4027. The product 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 industrial markets.