S-92785A504 4-40 x 7/16" 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 and secure fastening ensured by the Class 3A thread fit, minimizing the risk of loosening under vibration.
• High-strength performance backed by a Rockwell B80 hardness, providing excellent durability and resistance to wear.
• Easy installation and removal with the 0.050" hex drive, allowing for efficient assembly and maintenance.
• Effective component positioning thanks to the 90° cone point, which bites into surfaces for a firm, non-slip grip.
• Broad industrial compatibility with the 4-40 UNC coarse thread, a common standard for various machinery and equipment.
• Compliance with major standards including ASME B18.3, ensuring quality and interchangeability in professional applications.

Professional Applications & Engineering Value

This 4-40 UNC set screw is engineered to address critical challenges in industrial assembly, such as component slippage and corrosion-induced failure. Made from 18-8 stainless steel, it offers exceptional resistance to rust and oxidation, making it suitable for use in moist or chemically aggressive environments like marine equipment, food processing machinery, and outdoor industrial devices. The hex headless design and Class 3A thread fit provide a flush, secure fastening that withstands high vibration, reducing maintenance needs and downtime. The 90° cone point ensures a tight grip on shafts and collars, preventing axial movement in precision applications. By integrating coarse thread spacing and a right-hand thread, it facilitates quick installation and reliable performance in automated production lines, enhancing overall engineering efficiency and product longevity.

Specification Summary & Compliance

This set screw adheres to strict dimensional tolerances with a Class 3A thread fit and UNC thread type, ensuring high precision and interchangeability. It is manufactured in compliance with ASME B18.3 standards for consistent quality. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental responsibility for global industrial use.