S-92785A552 5/16"-24 x 1/4" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and extended service life.
• Maximum holding power and vibration resistance ensured by the fine UNF thread and precise Class 3A thread fit.
• Secure, deep penetration into the mating part with the 118° cone point, preventing component slippage.
• Exceptional durability provided by a Rockwell B80 hardness, resisting wear and deformation under load.
• Easy and secure installation using a standard 5/32" hex key, facilitated by the headless, flush-fit design.
• Reliable performance in regulated industries with compliance to ASME B18.3, RoHS 3, and REACH standards.
• Right-hand thread direction for standard, intuitive assembly and disassembly procedures.

Professional Applications & Engineering Value

This 5/16"-24 UNF Class 3A set screw is engineered to solve critical challenges in precision assembly and motion control systems. The 18-8 Stainless Steel material provides excellent resistance to rust and corrosion, making it suitable for applications in food processing, marine, and chemical equipment. The headless design and cone point with a sharp 118° angle allow for a flush, unobtrusive fit while generating high clamping force and biting deeply into shafts and collars to prevent axial movement. This is vital for securing gears, pulleys, and couplings in high-vibration environments like machinery and automotive systems, ensuring long-term positional integrity and reducing maintenance needs. Its fine thread and precise Class 3A fit offer superior load distribution and holding strength compared to coarse-thread alternatives.

Specification Summary & Compliance

This set screw features a 5/16"-24 UNF fine thread with a Class 3A thread fit for high precision and a thread diameter of 0.313". It is manufactured to meet ASME B18.3 specifications, ensuring dimensional accuracy and performance reliability. The product is also confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to strict environmental and safety regulations for industrial components.