S-92785A510 5-40 x 1/2" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Maximum holding power with Class 3A thread fit ensuring tight, secure fastening in demanding applications
• Superior corrosion resistance provided by 18-8 stainless steel construction for long-lasting performance in harsh environments
• Excellent grip and minimal surface damage thanks to the 90° cone point design that concentrates pressure effectively
• High durability and wear resistance from Rockwell B80 hardness, maintaining integrity under repeated use
• Easy installation and removal with the 1/16" hex socket drive, allowing efficient tool engagement in confined spaces
• Reliable coarse UNC threading enabling quick assembly and strong resistance to vibration loosening
• Space-saving headless design ideal for applications where flush mounting is required without protruding components

Professional Applications & Engineering Value

Engineered for precision and reliability, these 5-40 UNC set screws in 18-8 stainless steel address critical industrial challenges such as component slippage and corrosion-induced failure. The headless design with hex socket drive allows seamless integration into tight assemblies, while the 90° cone point ensures concentrated clamping force, preventing movement in shafts, collars, and gears. With a coarse thread and Class 3A fit, they provide robust vibration resistance in machinery, automotive, and electronics applications, reducing maintenance needs and enhancing operational safety. This combination of material strength and geometric precision delivers consistent performance in high-stress environments, supporting efficient production and long-term equipment reliability.

Specification Summary & Compliance

This set screw adheres to ASME B18.3 specifications, ensuring dimensional accuracy and interchangeability. Thread standards include 5-40 UNC coarse threads with a Class 3A fit for precise tolerances, and the 1/2" length and 0.125" diameter provide consistent sizing. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations guarantees environmental safety and material restrictions are met, supporting sustainable and responsible manufacturing practices.