S-91381A374 3/8"-24 x 1" ASME B18.3 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 on alloy steel, extending service life in harsh industrial environments
- Enhanced thread engagement precision with Class 3A fit for secure, vibration-resistant fastening in critical assemblies
- Damage-free component protection through brass soft tip design that prevents marring of mating surfaces
- Optimized torque transmission via 3/16" hex drive that prevents tool slippage during installation
- Reliable fine-thread performance with 3/8"-24 UNF configuration maintaining tension under dynamic loads
- Consistent mechanical properties ensured by Rockwell C28 hardness for repeated use without deformation
- Headless space-saving design allowing flush mounting where clearance is limited
Professional Applications & Engineering Value
This black-oxide alloy steel set screw addresses critical challenges in precision assembly applications where surface protection and vibration resistance are paramount. The UNF fine threads with Class 3A fit provide exceptional holding power in machinery, automotive components, and electronic enclosures subject to thermal cycling. The brass soft tip engineering prevents damage to shafts and precision gears while maintaining electrical conductivity in grounding applications. With its hex drive configuration and headless design, it solves space-constrained installation problems while ensuring reliable torque application in automated assembly systems. The combination of Rockwell C28 hardness and corrosion-resistant coating delivers long-term performance in manufacturing equipment, robotics, and industrial controls.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 3A thread fit ensuring precision tolerance control. The 3/8"-24 UNF fine thread configuration maintains consistent engagement while the 1" length provides optimal fastening depth. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for global industrial applications requiring strict material restrictions.
