S-91375A130 5-40 x 5/8" 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 Alloy Steel construction, extending service life in harsh industrial environments.
- Exceptional holding power provided by the cup point tip, which bites into surfaces to prevent component slippage.
- High-strength durability with Rockwell C45 hardness, resisting wear and deformation under heavy loads.
- Precise and reliable fastening ensured by the Class 3A thread fit, minimizing the risk of loosening in critical assemblies.
- Easy installation and removal with a 1/16" hex drive, allowing for efficient maintenance and adjustments.
- Broad compatibility with UNC coarse threads, making it suitable for a wide range of industrial machinery and equipment.
- Confident regulatory compliance meeting ASME B18.3, RoHS 3, and REACH standards for safe, global use.
Professional Applications & Engineering Value
This 5-40 UNC set screw is engineered to address common industrial challenges such as component misalignment and vibration-induced loosening. The Black-Oxide Alloy Steel material provides a protective layer against rust and wear, crucial for machinery exposed to moisture or chemicals. Its headless design and cup point tip create a flush, secure fit that digs into shafts and collars, preventing rotational movement in assemblies like gears, pulleys, and couplings. With a Class 3A thread fit and coarse thread spacing, it ensures quick, accurate installation and reliable performance in high-stress applications, from automotive systems to manufacturing equipment. This combination of precision and durability makes it an ideal choice for engineers seeking long-term fastening solutions.
Specification Summary & Compliance
This set screw adheres to Class 3A thread fit tolerances for precise engagement, with UNC coarse threads (5-40 size) and a right-hand thread direction. It meets ASME B18.3 manufacturing specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity for industrial use.
