S-91375A595 5/16"-24 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 harsh industrial environments
- Exceptional thread precision with UNF Class 3A fine threads ensuring secure, vibration-resistant fastening
- Optimized torque transmission through 5/32" hex drive design for reliable installation without slippage
- Enhanced holding power from cup tip design that creates permanent seating in shafts and collars
- High mechanical strength with Rockwell C45 hardness alloy steel for demanding applications
- Space-saving headless construction ideal for confined assemblies where protruding fasteners aren't feasible
- Regulatory compliance assurance meeting ASME B18.3 specifications and environmental standards
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers critical performance in precision assemblies where vibration resistance and permanent positioning are paramount. The UNF Class 3A fine threads provide superior engagement in tapped holes, while the cup tip design bites into shaft materials to prevent rotational slippage under dynamic loads. Engineered for industrial machinery, power transmission systems, and precision instruments, this headless set screw solves alignment challenges in space-constrained applications. The Rockwell C45 hardness ensures the fastener maintains its mechanical properties in high-stress environments, making it ideal for permanent installations in collars, gears, and pulleys where disassembly isn't anticipated.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with UNF Class 3A thread tolerances ensuring precision fit. The 5/16"-24 fine thread configuration provides optimal thread engagement in critical applications. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards. Features right-hand thread direction with 1/4" length and 5/32" hex drive for standardized tool compatibility across industrial maintenance and assembly operations.
