S-92845A721 5-40 x 5/16" 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 long-term reliability.
• Precise Class 3A thread fit ensures tight, secure fastening with minimal risk of loosening under vibration.
• Extended tip design provides enhanced grip and seating in assemblies, improving component alignment.
• Hex drive headless style allows for flush installation in confined spaces and easy torque application.
• High Rockwell B80 hardness offers excellent wear resistance and durability under mechanical stress.
• Compliance with ASME B18.3 standards guarantees consistent quality and interchangeability in industrial applications.
• RoHS 3 and REACH compliance ensures environmental safety and regulatory adherence for global supply chains.

Professional Applications & Engineering Value

This 5-40 UNC Class 3A set screw is engineered to address common industrial challenges such as component slippage and corrosion-induced failure. Made from 18-8 stainless steel, it provides exceptional resistance to rust and oxidation, making it suitable for machinery, automotive, and electronics where moisture or chemicals are present. The coarse thread spacing and right-hand thread facilitate quick installation and high clamping force, while the extended tip enhances engagement with mating parts, reducing the need for frequent retightening. Its hex drive and headless design enable secure fastening in tight spaces, supporting efficient assembly and maintenance in precision equipment and durable structures.

Specification Summary & Compliance

This set screw adheres to Class 3A thread fit for precise dimensional accuracy and UNC thread type with a 5-40 size. It conforms to ASME B18.3 manufacturing specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets industry standards for safety and environmental responsibility.