S-94105A366 5/16"-18 x 1 1/2" 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 for extended service life in harsh industrial environments
- Precise Class 3A thread fit ensures tight, secure fastening with minimal backlash in critical assemblies
- Exceptional hardness (Rockwell C45) provides excellent wear resistance and maintains thread integrity under heavy loads
- Hex drive design delivers maximum torque transmission and prevents tool slippage during installation
- Headless construction allows for flush mounting in space-constrained applications
- Coarse UNC threading enables quick assembly and disassembly while maintaining strong holding power
- Flat tip design creates secure, mar-free contact surfaces on shafts and components
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers exceptional performance in demanding mechanical systems where vibration resistance and positional accuracy are critical. The Class 3A thread fit provides superior dimensional precision for applications requiring minimal clearance, such as shaft collars, gear hubs, and coupling assemblies. The combination of Rockwell C45 hardness and coarse UNC threading ensures reliable performance in high-vibration environments while resisting wear from repeated adjustments. The headless design with hex drive solves space limitation challenges in compact machinery while maintaining accessibility for maintenance. These set screws are engineered to prevent loosening in rotating equipment, making them ideal for power transmission systems, automotive components, and industrial machinery where secure fastening is paramount.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications and ASTM F912 standards, this set screw maintains precise Class 3A thread fit tolerances for consistent performance. The 5/16"-18 UNC coarse thread configuration ensures compatibility with standard components while the 1 1/2" length provides optimal engagement depth. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations guarantees safe use across various industrial sectors, meeting the latest international regulatory requirements for hazardous substances.
