S-91210A100 M3 x 6 mm DIN 914, ISO 4027 Set Screws

Key Features & Benefits at a Glance

• Superior vibration resistance thanks to the 90° cone point design that bites into surfaces, preventing loosening under dynamic loads.
• Exceptional strength and durability provided by the alloy steel construction with a Rockwell C45 hardness, ensuring long-term reliability in demanding applications.
• Easy and secure installation with the internal hex drive (1.5mm), allowing for high torque application and a flush, headless finish.
• Reliable and precise coarse threading (M3 x 0.5mm, Class 5g6g fit) ensures quick assembly and a secure hold in a wide range of materials.
• Guaranteed dimensional consistency and interchangeability, manufactured to meet the stringent DIN 914 and ISO 4027 standards.
• Safe for use in various industries as it is fully compliant with RoHS 3 and REACH environmental regulations.
• Optimized for space-constrained designs with its compact 6mm length and headless profile, ideal for securing collars and pulleys.

Professional Applications & Engineering Value

This M3 set screw is engineered to solve critical challenges in industrial assembly, particularly where vibration and rotational forces can cause standard fasteners to fail. The alloy steel material, hardened to Rockwell C45, provides the core strength needed to resist wear and deformation. The defining 90° cone point concentrates pressure to create a permanent dimple in the shaft, offering a far more secure locking mechanism than a cup point, which is essential for permanently positioning components like gears and bearings on rotating shafts. The coarse thread (0.5mm pitch) and Class 5g6g tolerance ensure a strong bite and easy installation in both soft and hard materials, from aluminum housings to steel shafts. Its headless and hex drive design makes it the go-to choice for applications requiring a flush finish and high torque capability without protruding parts, ensuring reliable performance in machinery, automotive systems, and precision equipment.

Specification Summary & Compliance

This precision metric set screw features an M3 diameter with a 0.5mm coarse thread pitch and a total length of 6mm. The thread fit is manufactured to Class 5g6g as per ISO standards, ensuring excellent dimensional accuracy and interchangeability. It is produced in full compliance with the DIN 914 / ISO 4027 manufacturing specifications for set screws with cone points. Furthermore, this component is certified to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming its adherence to strict environmental and safety regulations for industrial use.