S-91375A677 7/16"-14 x 2 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 through black-oxide coating, extending service life in demanding industrial environments
- Precise Class 3A thread fit ensures secure fastening with minimal backlash in critical assemblies
- Exceptional hardness (Rockwell C45) maintains thread integrity under high vibration and load conditions
- Headless hex drive design provides flush installation where protruding fasteners aren't feasible
- Cup tip configuration creates positive seating and prevents component slippage during operation
- Coarse UNC threading enables rapid installation and reduced cross-threading risk in production environments
- Full regulatory compliance meets ASME B18.3, RoHS 3, and REACH standards for global industrial applications
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers engineering-grade performance for permanent positioning applications where vibration resistance and corrosion protection are critical. The 7/16"-14 UNC coarse thread with Class 3A precision fit ensures reliable engagement in pulleys, gears, and collars, while the headless hex design allows for seamless integration in confined spaces. The cup tip provides concentrated contact pressure that prevents shaft damage and maintains alignment in high-torque industrial equipment. Manufactured to ASME B18.3 specifications with Rockwell C45 hardness, this fastener addresses common failure points in machinery, automotive, and heavy equipment applications where loosening under dynamic loads would compromise system integrity.
Specification Summary & Compliance
This set screw features 7/16"-14 UNC coarse threads with Class 3A thread fit precision, manufactured from alloy steel with black-oxide surface treatment. The 2-1/2" length and 7/32" hex drive provide standardized installation compatibility. The product fully complies with ASME B18.3 specifications (ASTM F912), meets RoHS 3 (2015/863/EU) environmental directives, and is REACH (EC 1907/2006) compliant for hazardous substance restrictions.
