S-91375A904 1"-8 x 1" ASME B18.3, ASTM F912 Set Screws
Set Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior holding power with Class 3A thread fit for precise, vibration-resistant fastening in demanding applications
- Exceptional corrosion resistance from the black-oxide finish, extending service life in harsh industrial environments
- High-strength durability with Rockwell C45 hardness alloy steel, resisting deformation under heavy loads
- Secure, non-slip installation via the 9/16" hex drive, allowing high torque application without head protrusion
- Enhanced grip and alignment from the cup tip design, minimizing component slippage and damage
- Reliable coarse threading (UNC 1"-8) for quick assembly and reduced cross-threading risks in right-hand applications
- Regulatory peace of mind with full compliance to ASME, ASTM, RoHS 3, and REACH standards
Professional Applications & Engineering Value
This black-oxide alloy steel set screw is engineered to address critical challenges in machinery assembly, automotive components, and heavy equipment where vibration resistance and long-term reliability are paramount. The headless design with hex drive allows flush mounting in confined spaces, while the cup tip concentrates clamping force to prevent shaft or hub damage. Its Class 3A UNC coarse threads ensure rapid installation and maintain tight tolerances, reducing maintenance downtime. Ideal for securing gears, pulleys, and collars, this industrial-grade fastener delivers consistent performance under dynamic loads, backed by Rockwell C45 hardness for sustained integrity in high-stress environments.
Specification Summary & Compliance
This set screw adheres to inch system measurements with a 1"-8 UNC coarse thread and Class 3A thread fit for superior dimensional accuracy. Manufactured to ASME B18.3 and ASTM F912 specifications, it ensures consistent quality and interoperability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material restrictions adherence for global industrial use.
