S-91375A723 1/2"-13 x 2 3/4" 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
- Exceptional holding power with Class 3A thread fit for precise, secure fastening in high-vibration environments.
- Superior corrosion resistance from the black-oxide finish, extending service life in harsh industrial conditions.
- High strength and durability due to alloy steel construction and Rockwell C45 hardness, resisting wear and deformation.
- Easy installation and removal with a 1/4" hex drive, allowing for efficient assembly in confined spaces.
- Reliable grip and minimal surface damage from the cup tip design, ideal for repeated adjustments on shafts and collars.
- Wide compatibility with 1/2"-13 UNC coarse threads, ensuring easy integration into standard industrial assemblies.
- Compliance with global standards, including ASME B18.3, RoHS 3, and REACH, for safe and regulated use.
Professional Applications & Engineering Value
This black-oxide alloy steel set screw is engineered to address common industrial challenges such as loosening under dynamic loads and corrosion in demanding environments. The headless design and hex drive enable flush mounting and tool access in tight spaces, while the Class 3A UNC threads provide a tighter fit than standard options, reducing the risk of backlash in machinery components like pulleys, gears, and couplings. Made from high-strength alloy steel with a Rockwell C45 hardness, it withstands high-stress applications without stripping or failing. The black-oxide surface treatment adds a protective layer against rust and wear, making it ideal for automotive, aerospace, and heavy equipment sectors where reliability and longevity are critical. Its coarse thread spacing ensures quick assembly and disassembly, saving time in maintenance and production cycles.
Specification Summary & Compliance
This set screw adheres to ASME B18.3 specifications, with precise Class 3A thread fit and UNC 1/2"-13 coarse threads for consistent performance. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for international industrial markets.
