S-91375A849 3/4"-10 x 3 1/2" 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 harsh industrial environments
- Exceptional thread engagement through Class 3A precision fit, ensuring reliable fastening without loosening
- High-strength performance with Rockwell C45 hardness, maintaining integrity under heavy loads
- Easy installation and removal via 3/8" hex drive, compatible with standard tools for efficient maintenance
- Secure component positioning with cup tip design, preventing slippage and damage to mating surfaces
- Optimal material selection using alloy steel, providing excellent durability for demanding applications
- Wide compatibility with 3/4"-10 UNC coarse threads, suitable for various industrial equipment and machinery
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers critical engineering advantages in industrial settings where vibration resistance and long-term reliability are paramount. The Class 3A thread fit maintains precise tolerances, preventing backlash in rotating assemblies and power transmission systems. Its headless design with hex drive enables flush mounting in confined spaces while providing sufficient torque transmission. The cup tip configuration creates concentrated pressure points for superior grip on shafts, collars, and gears, eliminating the need for additional locking mechanisms. Particularly valuable in manufacturing equipment, automotive components, and heavy machinery, this UNC coarse thread set screw withstands dynamic loads while the corrosion-resistant coating protects against industrial atmospheres and fluids.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with material certification under ASTM F912. Thread system features 3/4"-10 UNC coarse threads with Class 3A precision tolerance for consistent fit. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Heat treated to Rockwell C45 hardness for optimal strength-to-toughness balance. Right-hand thread direction with 3½" length and cup tip configuration per industry standards.
