S-91375A470 3/4"-16 x 2 1/4" 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 thread precision with Class 3A fit ensuring reliable, vibration-resistant fastening in critical assemblies
- Optimized torque transmission through 3/8" hex drive design, preventing tool slippage during installation
- Enhanced material strength from Rockwell C45 hardened alloy steel, maintaining integrity under heavy loads
- Secure positioning capability with cup tip design that bites into shafts without causing excessive surface damage
- Regulatory compliance assurance meeting ASME B18.3, ASTM F912, RoHS 3, and REACH standards for global applications
- Space-saving headless configuration allowing flush mounting where clearance is limited
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers critical performance advantages in industrial settings where vibration resistance and positioning accuracy are paramount. The 3/4"-16 UNF fine thread with Class 3A precision fit maintains clamping force in high-vibration machinery, while the cup tip design provides superior grip on shafts and collars without the excessive surface damage associated with sharper point styles. The Rockwell C45 hardness ensures the fastener maintains its mechanical properties under repeated stress cycles, making it ideal for power transmission equipment, industrial machinery, and precision assembly applications where reliability cannot be compromised.
Specification Summary & Compliance
Manufactured to exacting ASME B18.3 specifications with Class 3A thread fit for superior dimensional accuracy. The UNF fine thread (3/4"-16) provides enhanced tensile strength compared to coarse thread alternatives. Full compliance with ASTM F912 material standards, RoHS 3 (2015/863/EU) for hazardous substance restrictions, and REACH (EC 1907/2006) for chemical safety. The 2 1/4" length and 3/8" hex drive conform to industrial standards for consistent performance across applications.
