S-91375A758 3-48 x 1/4" 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 for extended service life in demanding industrial environments
- Exceptional holding power achieved through Class 3A thread fit precision, ensuring secure fastening in critical assemblies
- High-strength durability from Rockwell C45 hardened alloy steel construction, resisting deformation under heavy loads
- Optimized torque transmission via 0.050" hex drive design, preventing tool slippage during installation
- Reliable coarse threading with UNC 3-48 specification for rapid installation and vibration resistance
- Precision cup tip design creating concentrated contact pressure for superior shaft positioning and minimal component marring
- Regulatory compliance assurance meeting ASME B18.3 standards and environmental regulations for global supply chain integration
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers critical engineering solutions for precision assembly challenges. The headless design with hex drive enables flush mounting in confined spaces while maintaining high torque capability. UNC coarse threads combined with Class 3A fit provide exceptional resistance to vibrational loosening in machinery, automotive, and aerospace applications. The cup tip configuration concentrates clamping force for secure shaft collars and pulley retention, while the Rockwell C45 hardness ensures dimensional stability under cyclic loading. These industrial set screws are engineered to prevent assembly failure in high-stress environments where reliability is paramount.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 3A thread fit tolerance for precision engagement. Features 3-48 UNC coarse threads with right-hand direction and 1/4" length dimensions. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications requiring restricted substance control.
