S-91375A131 5-40 x 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 secure, vibration-resistant fastening in demanding applications.
- Superior corrosion resistance provided by the black-oxide finish on alloy steel, extending service life in various environments.
- High strength and durability from Rockwell C45 hardness, ensuring reliable performance under mechanical stress.
- Easy installation and removal with the 1/16" hex drive, allowing for efficient assembly and maintenance.
- Effective grip and minimal surface damage due to the cup tip design, ideal for precise positioning on shafts and components.
- Wide compatibility with coarse UNC threads and right-hand direction, suitable for standard inch-system assemblies.
- Regulatory compliance assurance meeting ASME B18.3, RoHS 3, and REACH standards for safe, quality-driven use.
Professional Applications & Engineering Value
This 5-40 UNC set screw is engineered to address common industrial challenges such as component slippage and loosening under dynamic loads. Crafted from black-oxide alloy steel, it offers enhanced wear and corrosion resistance, making it ideal for machinery, automotive, and precision equipment where reliable clamping force is critical. The headless design and cup tip ensure flush mounting and concentrated contact pressure, reducing the risk of damage to secured parts. With coarse thread spacing and Class 3A thread fit, it provides quick assembly and high torque resistance, streamlining production and maintenance processes in B2B settings.
Specification Summary & Compliance
This set screw adheres to precise dimensional standards, including a Class 3A thread fit for tight tolerances and consistent performance. It conforms to ASME B18.3 specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity. The inch-based measurements, such as 5-40 UNC thread size and 3/4" length, support seamless integration into standardized assemblies.
