S-91390A553 M8 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
- Exceptional vibration resistance due to the cup tip design that creates secure, non-slip locking in demanding applications
- Superior strength and durability provided by the alloy steel construction with a Rockwell C45 hardness rating
- Reliable and precise fit ensured by the Class 5g6g thread tolerance for consistent performance in metric assemblies
- Easy installation and high torque capability with the internal 4 mm hex drive, allowing for efficient assembly in confined spaces
- Broad industrial compatibility as it conforms to the internationally recognized DIN 916 and ISO 4029 standards
- Safe for use in regulated environments with full compliance to RoHS 3 and REACH environmental directives
- Optimized for coarse thread applications with an M8x1.25mm thread for rapid installation and robust holding power
Professional Applications & Engineering Value
This alloy steel set screw is engineered to solve critical challenges in industrial machinery and precision equipment. The headless design with a hex drive is ideal for applications where space is limited and a flush surface is required, preventing snagging and maintaining a clean profile. The M8 coarse thread (1.25mm pitch) and Class 5g6g thread fit provide excellent engagement and resistance to loosening under vibration, a common failure point in dynamic systems. Manufactured from high-strength alloy steel and heat-treated to a Rockwell C45 hardness, it delivers the necessary durability for permanent or semi-permanent fastening in pulleys, gears, and collars. The cup tip concentrates locking force for a secure grip on shafts, making it a vibration-resistant fastening solution for high-stress environments.
Specification Summary & Compliance
This set screw features an M8 x 1.25mm coarse thread with a Class 5g6g thread fit per ISO metric standards, ensuring dimensional accuracy and interchangeability. It is manufactured to meet the specifications of DIN 916 and ISO 4029. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of restricted hazardous substances.
