S-91210A702 M3 x 12 mm DIN 914, ISO 4027 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with a 90° cone point that bites deeply into materials, preventing component slippage and ensuring reliable positioning.
• Exceptional durability and wear resistance thanks to the high-strength alloy steel construction and Rockwell C45 hardness, extending service life in demanding applications.
• Secure and tamper-resistant installation with a headless, hex drive design that allows for flush mounting and requires a specialized 1.5 mm hex key for access.
• Precise and reliable thread engagement with a Class 5g6g coarse thread fit, ensuring consistent performance and ease of assembly in various materials.
• Broad industrial compatibility as the M3 x 0.5 mm metric thread conforms to DIN 914 and ISO 4027 standards, guaranteeing interchangeability and quality.
• Safe for regulated environments with full compliance to RoHS 3 and REACH regulations, making it suitable for use in electronics and other sensitive industries.
• Optimized for high-vibration settings where the combination of a coarse pitch and cone point provides excellent resistance to loosening.

Professional Applications & Engineering Value

This alloy steel set screw is engineered to solve critical challenges in precision assembly and motion control systems. Its headless design and hex drive allow for a clean, low-profile installation, ideal for securing pulleys, gears, and collars on shafts where space is constrained. The 90° cone point concentrates force to create a permanent dimple in the shaft, providing a mechanical lock that resists rotational forces and vibration—a common failure point in machinery. Manufactured from high-strength alloy steel and heat-treated to a Rockwell C45 hardness, it withstands high shear and tensile stresses without deforming. This makes it a vital component in applications ranging from automotive transmissions and industrial robotics to precision medical devices, ensuring long-term alignment and operational reliability.

Specification Summary & Compliance

This metric set screw features an M3 x 0.5 mm coarse thread with a Class 5g6g thread fit for standard tolerance and easy assembly. It is manufactured to the dimensional and performance requirements of DIN 914 and ISO 4027. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of hazardous substances and safe for use in various industrial and consumer products.