S-91375A912 1"-8 x 2" 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 corrosion resistance with Black-Oxide coating, extending service life in demanding industrial environments
- Exceptional holding power from Class 3A thread fit, providing tighter tolerances and more secure fastening than standard Class 2A
- High-strength durability with Rockwell C45 hardness alloy steel, resisting deformation under heavy loads
- Optimal torque transmission through the 9/16" hex drive, preventing tool slippage during installation
- Enhanced grip and positioning with cup tip design, minimizing component movement in assemblies
- Reliable coarse threading (UNC 1"-8) for quicker installation and reduced cross-threading risk
- Space-saving headless design allowing flush mounting where clearance is limited
Professional Applications & Engineering Value
This Black-Oxide Alloy Steel set screw delivers critical performance in industrial applications where vibration resistance and positional stability are paramount. The Class 3A thread fit ensures precise engagement with mating components, eliminating play in precision machinery, motor mounts, and power transmission systems. The cup tip design creates concentrated pressure points that securely lock gears, pulleys, and collars onto shafts without damaging surfaces. With Rockwell C45 hardness and corrosion-resistant coating, this headless hex drive screw maintains integrity in high-stress environments while complying with industrial safety standards. The coarse UNC threading enables rapid assembly in production lines, reducing installation time while providing reliable, vibration-resistant fastening solutions.
Specification Summary & Compliance
This set screw features 1"-8 UNC coarse threads with Class 3A thread fit for precision tolerance, manufactured from alloy steel with Black-Oxide surface treatment. The fastener meets ASME B18.3 specifications and ASTM F912 manufacturing standards, ensuring dimensional accuracy and performance reliability. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for safe industrial use worldwide.
