S-91375A694 7/16"-20 x 3" 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 cup point design that bites into materials for maximum resistance to loosening under vibration and torque
- Exceptional thread precision with Class 3A fit ensuring tight tolerances and reliable engagement in demanding applications
- Enhanced corrosion resistance from black-oxide coating, extending service life in harsh industrial environments
- High-strength durability from alloy steel with Rockwell C45 hardness, maintaining integrity under heavy loads
- Secure installation with hex drive design allowing high torque application without slippage in confined spaces
- Broad compliance with ASME B18.3 standards and environmental regulations for global industrial use
- Optimized for fine-thread applications providing better tension control in precision assemblies
Professional Applications & Engineering Value
This 7/16"-20 UNF Class 3A set screw delivers critical performance in industrial settings where vibration resistance and precise positioning are paramount. The black-oxide alloy steel construction combined with Rockwell C45 hardness ensures the fastener withstands repetitive stress cycles without deformation. The cup point design creates permanent indentation in shaft components, preventing axial movement in pulleys, gears, and collars. Engineered with fine thread spacing and Class 3A thread fit, it maintains clamping force in high-speed machinery, automotive systems, and precision equipment. The headless configuration with hex drive enables flush mounting in space-constrained assemblies while permitting substantial installation torque.
Specification Summary & Compliance
This set screw features 7/16"-20 UNF fine threads with Class 3A thread fit for precision engagement. Manufactured to ASME B18.3 specifications with Rockwell C45 hardness rating. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The 3" length and right-hand thread direction provide standardized installation across industrial applications.
