S-91390A256 M2.5 x 6 mm DIN 916, ISO 4029 Set Screws
Set Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior holding power with cup point design that bites into materials for secure, vibration-resistant fastening.
- Exceptional strength and durability from high-strength alloy steel and Rockwell C45 hardness, resisting wear and deformation under load.
- Precise and reliable fit with Class 5g6g thread tolerance, ensuring consistent performance in metric assemblies.
- Easy installation in confined spaces thanks to the compact, headless design and 1.3mm hex drive.
- Optimized for quick assembly with coarse 0.45mm pitch and right-hand thread, reducing installation time.
- Broad industrial compatibility by conforming to DIN 916 and ISO 4029 standards for global engineering projects.
- Safe for regulated environments with full compliance to RoHS 3 and REACH, supporting sustainable manufacturing.
Professional Applications & Engineering Value
This M2.5 set screw is engineered to address critical challenges in precision machinery, automotive, and electronics assembly. The alloy steel construction and Rockwell C45 hardness provide high tensile strength, preventing stripping and failure in high-stress applications. Its cup point delivers maximum grip by creating a permanent indentation, effectively resisting loosening from vibrations—a common issue in dynamic systems. With a coarse thread pitch of 0.45mm and Class 5g6g thread fit, it ensures rapid installation and reliable engagement in metric components, reducing assembly errors. The headless design and compact 1.3mm hex drive allow for flush mounting in tight spaces, making it ideal for securing gears, pulleys, and shafts without protruding hardware.
Specification Summary & Compliance
This set screw features a M2.5 thread size with 0.45mm coarse pitch and 6mm length, manufactured to Class 5g6g thread tolerance for precise fit. It meets DIN 916 and ISO 4029 specifications, ensuring dimensional accuracy and performance consistency. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental standards for industrial use.
