S-91375A020 1-64 x 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 engagement with Class 3A fit for reliable, vibration-resistant fastening in precision assemblies
- High-strength performance from alloy steel with Rockwell C45 hardness, maintaining integrity under heavy loads
- Secure installation and removal with hex drive design, preventing tool slippage and component damage
- Optimized for confined spaces due to headless construction, ideal for compact mechanical designs
- Enhanced grip and positioning with cup tip design, minimizing component movement in rotational applications
- Broad industry compatibility with UNC coarse threads, ensuring easy replacement and standardization
Professional Applications & Engineering Value
This 1-64 UNC set screw delivers critical performance in applications requiring precise component positioning and rotational force transfer. The black-oxide alloy steel construction provides excellent resistance to environmental degradation, while the Class 3A thread fit ensures minimal backlash in assemblies subject to vibration. The headless design with hex drive allows installation in space-constrained environments common in machinery, automotive, and electronics manufacturing. With coarse thread spacing and cup tip configuration, it maintains secure clamping in pulleys, gears, and collars where slippage could cause operational failure. These engineering features make it particularly valuable for maintenance teams and OEMs requiring reliable, long-lasting fastening solutions.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 3A thread fit for precision dimensional control. The UNC 1-64 thread with coarse spacing adheres to standardized inch-system requirements. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material traceability. The Rockwell C45 hardness rating confirms consistent mechanical properties across production batches.
