S-91375A582 5/16"-18 x 7/8" 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
- Exceptional holding power with Class 3A thread fit for secure, vibration-resistant fastening in demanding applications
- Superior corrosion resistance thanks to black-oxide coating on alloy steel, extending service life in harsh industrial environments
- High-strength durability with Rockwell C45 hardness, ensuring reliable performance under heavy loads and repeated adjustments
- Optimal torque transmission via hex drive and cup tip design, preventing slippage and ensuring precise component positioning
- Wide industrial compatibility with UNC coarse threads and right-hand direction, facilitating quick installation and replacement
- Regulatory peace of mind through compliance with ASME B18.3, ASTM F912, RoHS 3, and REACH standards
- Space-saving headless design allowing flush mounting in confined assemblies without protruding components
Professional Applications & Engineering Value
This 5/16"-18 UNC set screw delivers critical engineering solutions for industrial machinery, automotive systems, and precision equipment where vibration resistance and positional accuracy are paramount. The black-oxide alloy steel construction combats corrosion while maintaining Rockwell C45 hardness for enduring structural integrity under dynamic loads. Its cup tip design concentrates contact pressure, preventing shaft damage and maintaining alignment in power transmission components. With coarse UNC threads and Class 3A thread fit, installation becomes faster while ensuring zero backlash in high-torque applications. The headless configuration and hex drive enable discreet, tool-accessible fastening in space-constrained assemblies, making it ideal for permanent set points on gears, collars, and pulleys.
Specification Summary & Compliance
Manufactured to ASME B18.3 and ASTM F912 specifications with Class 3A thread fit ensuring precise dimensional accuracy and interchangeability. Features 5/16"-18 UNC coarse threads with right-hand direction and 7/8" length. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for safe industrial use.
