S-91375A651 3/8"-24 x 1 3/4" 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 and fit with Class 3A UNF fine threads, ensuring reliable, vibration-resistant fastening.
- High-strength durability from Rockwell C45 hardened alloy steel, preventing deformation under heavy loads.
- Secure, flush installation with headless design and hex drive, ideal for confined spaces and smooth surfaces.
- Enhanced gripping power from the cup tip, minimizing component slippage in high-torque applications.
- Broad regulatory compliance including ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental standards.
- Optimized for inch-system machinery with standard 3/8"-24 thread size, simplifying replacement and inventory management.
Professional Applications & Engineering Value
This black-oxide alloy steel set screw is engineered to address critical industrial challenges such as vibration loosening and corrosion in machinery components. Its Class 3A UNF fine threads provide a tighter fit than coarse threads, reducing the risk of backlash in precision assemblies like motor shafts, gears, and couplings. The headless hex drive design allows for flush mounting in space-constrained applications, while the cup tip bites securely into surfaces, maintaining alignment under dynamic loads. Made from hardened alloy steel, it withstands repetitive stress in automotive, aerospace, and heavy equipment, ensuring long-term fastening reliability without frequent maintenance.
Specification Summary & Compliance
This set screw adheres to ASME B18.3 specifications with 3/8"-24 UNF Class 3A fine threads, ensuring precise dimensional accuracy and interchangeability. It is manufactured from Rockwell C45 hardened alloy steel for consistent performance and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for industrial use globally.
