S-92785A508 4-40 x 1" ASME B18.3 Set Screws
Set Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
- Exceptional holding power due to the 90° cone point design, which digs securely into shafts and components to prevent loosening.
- Precise thread engagement with Class 3A thread fit, ensuring tight tolerances and reduced risk of cross-threading in assembly.
- High durability from Rockwell B80 hardness, providing excellent resistance to wear and deformation under load.
- Easy installation in confined spaces thanks to the headless design and compact 0.050" hex drive.
- Reliable performance in high-vibration applications with coarse UNC threads and right-hand direction for secure fastening.
- Compliance with major industry standards including ASME B18.3, ensuring consistent quality and interchangeability.
Professional Applications & Engineering Value
This 4-40 UNC set screw is engineered to address common industrial challenges such as component slippage and corrosion in demanding settings. Made from 18-8 stainless steel, it offers excellent resistance to rust and chemicals, making it suitable for machinery, automotive, and electronics where exposure to moisture or contaminants is a concern. The headless design and hex drive allow for flush mounting and easy access in tight spaces, while the coarse thread spacing and Class 3A thread fit provide quick assembly and reliable grip on shafts, collars, and gears. The 90° cone point concentrates pressure for maximum holding force, reducing the need for frequent retightening and minimizing downtime in production lines.
Specification Summary & Compliance
This set screw adheres to Class 3A thread fit for precise dimensional accuracy under the UNC thread standard, with a thread size of 4-40 and length of 1 inch. 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 global supply chains.
