S-91301A220 1"-14 x 1/2" 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 from the black-oxide finish, extending service life in demanding environments
- Exceptional thread precision with Class 3A fit ensures tight, secure fastening with minimal backlash
- High-strength performance backed by Rockwell C45 hardness, ideal for heavy-duty industrial applications
- Optimized torque transmission via the 9/16" hex drive, preventing stripping and enabling reliable installation
- Secure headless design allows for flush mounting in confined spaces without protruding components
- Fine thread engagement (1"-14) provides superior vibration resistance and load distribution
- Regulatory compliance assurance with RoHS 3 and REACH standards for global market acceptance
Professional Applications & Engineering Value
This black-oxide alloy steel set screw delivers critical engineering solutions where precision and durability are paramount. The Class 3A thread fit and fine thread pitch (1"-14) ensure zero-play fastening in high-vibration machinery, preventing loosening in automotive, aerospace, and heavy equipment assemblies. Its headless hex drive design enables seamless integration into pulleys, gears, and collars where space constraints exclude traditional fasteners. The corrosion-resistant black-oxide coating combats degradation in humid or chemically aggressive environments, while the Rockwell C45 hardness maintains structural integrity under repetitive dynamic loads. Engineered for UNS thread standards, this fastener guarantees interchangeability and reliability in OEM and MRO operations.
Specification Summary & Compliance
Manufactured to exacting inch system specifications with a Class 3A thread fit for superior dimensional accuracy. Complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulatory requirements. Threads conform to UNS standards with right-hand orientation and fine spacing (1"-14). Material certification includes alloy steel composition with verified Rockwell C45 hardness.
