S-91375A395 1/2"-20 x 7/8" ASME B18.3, ASTM F912 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 Class 3A thread fit for precise, vibration-resistant fastening in demanding applications.
- Enhanced corrosion resistance from the black-oxide finish, extending service life in various industrial environments.
- High-strength durability provided by alloy steel and Rockwell C45 hardness, resisting wear and deformation under heavy loads.
- Secure, flush installation due to the headless and hex drive design, ideal for confined spaces and preventing snagging.
- Reliable fine thread engagement with 1/2"-20 UNF threads and cup tip for concentrated clamping force and minimal component slippage.
- Broad industry compliance meeting ASME B18.3 specifications, RoHS 3, and REACH, ensuring safety and regulatory acceptance.
- Easy installation and removal with a standard 1/4" hex drive, facilitating efficient maintenance and assembly processes.
Professional Applications & Engineering Value
This high-strength set screw is engineered to solve critical challenges in industrial machinery, automotive assemblies, and precision equipment where vibration resistance and secure positioning are paramount. The Black-Oxide Alloy Steel construction, combined with a Rockwell C45 hardness, ensures exceptional durability against loosening and fatigue in high-stress environments. Its headless hex drive and fine UNF threads allow for a flush fit and superior grip, making it ideal for securing gears, pulleys, and collars without protruding parts. The cup tip concentrates force on a small area, providing reliable clamping without damaging shafts, while compliance with ASME B18.3 standards guarantees consistent performance in industrial applications.
Specification Summary & Compliance
This set screw features a 1/2"-20 UNF fine thread with a Class 3A thread fit for high precision and tight tolerances. It adheres to ASME B18.3 manufacturing specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial use.
