S-91375A688 7/16"-20 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, extending service life in demanding industrial environments
- Exceptional thread precision with Class 3A fit ensures secure, vibration-resistant fastening in critical assemblies
- High-torque capability through 7/32" hex drive design prevents stripping during installation and removal
- Optimized tip engagement with cup point design provides superior grip and resistance to rotational forces
- Enhanced material strength with Rockwell C45 hardness maintains structural integrity under heavy loads
- Reliable fine thread performance with 7/16"-20 UNF spacing for precise adjustment and secure positioning
- Headless configuration allows for flush mounting in space-constrained applications
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers exceptional performance in precision machinery, automotive systems, and industrial equipment where vibration resistance and reliable positioning are critical. The Class 3A thread fit combined with UNF fine threads ensures minimal backlash and superior clamping force distribution, effectively preventing loosening in high-stress applications. The cup tip design bites securely into mating surfaces, providing excellent resistance to rotational forces while the headless configuration enables clean, space-efficient installations. Engineered for industrial set screw applications requiring repeated adjustments, this fastener maintains its Rockwell C45 hardness through multiple torque cycles, ensuring long-term reliability in demanding environments.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with precise Class 3A thread fit tolerance for superior engagement. The 7/16"-20 UNF fine thread configuration meets industrial standards for spacing and pitch accuracy. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets. The black-oxide surface treatment on alloy steel substrate provides consistent performance within specified hardness parameters.
