S-91375A510 1"-8 x 2 1/4" 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 coarse 1"-8 UNC threads and Class 3A fit for reliable, vibration-resistant fastening in demanding applications.
- Exceptional durability and wear resistance thanks to Rockwell C45 hardness, ensuring long service life under high-stress conditions.
- Corrosion-resistant protection from the black-oxide finish, extending the screw's lifespan in various industrial environments.
- Easy installation and removal with a 9/16" hex drive, providing secure tool engagement without the need for a protruding head.
- Secure, non-slip grip from the cup tip design, which bites into surfaces to prevent component movement.
- Compliance with major industry standards including ASME B18.3 and ASTM F912, guaranteeing consistent quality and performance.
- Environmentally safe usage as it meets RoHS 3 and REACH regulations, supporting sustainable manufacturing practices.
Professional Applications & Engineering Value
This Black-Oxide Alloy Steel set screw is engineered to address critical challenges in industrial assembly, such as loosening under vibration and corrosion in harsh conditions. Its 1"-8 UNC coarse threads and Class 3A thread fit deliver maximum clamping force, making it ideal for securing pulleys, gears, and collars on shafts in machinery and automotive systems. The headless design with a hex drive allows for flush mounting in confined spaces, while the cup tip ensures a firm bite into materials. Combined with Rockwell C45 hardness, it resists deformation and wear, reducing maintenance needs and enhancing operational reliability in heavy-duty applications.
Specification Summary & Compliance
This set screw features precise Class 3A thread fit per UNC standards, with a thread size of 1"-8 and coarse spacing for optimal performance. It adheres to ASME B18.3 and ASTM F912 manufacturing specifications, ensuring dimensional accuracy and consistency. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in regulated industries without hazardous substances.
