S-91375A902 1"-8 x 3/4" 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 corrosion resistance with black-oxide coating that protects against rust in demanding industrial environments
- Exceptional thread engagement with Class 3A fit ensuring precise, vibration-resistant fastening in critical assemblies
- High-torque installation capability through 9/16" hex drive design for secure tightening without stripping
- Optimized material strength with Rockwell C45 hardness providing reliable performance under heavy loads
- Secure positioning with cup tip design that creates positive seating and prevents component slippage
- Industry-standard compatibility with 1"-8 UNC coarse threads for easy integration with existing equipment
- Space-saving design as a headless set screw ideal for applications with limited clearance
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers exceptional engineering value in industrial applications where vibration resistance and precise component positioning are critical. The Class 3A thread fit ensures minimal backlash in machinery assemblies, while the UNC coarse threads provide rapid installation in production environments. The cup tip design creates concentrated contact pressure that prevents shaft slippage in power transmission systems, making it ideal for securing gears, pulleys, and collars on rotating equipment. With Rockwell C45 hardness, this fastener maintains its mechanical properties under continuous stress, offering reliable performance in heavy machinery, automotive systems, and industrial equipment where failure is not an option.
Specification Summary & Compliance
This precision set screw features 1"-8 UNC coarse threads with Class 3A thread fit for superior dimensional accuracy. Manufactured to ASME B18.3 specifications (ASTM F912) with a length of 3/4" and 9/16" hex drive. The fastener is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting the latest environmental regulations for industrial use.
