S-92695A821 1/2"-20 x 5/8" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating, extending service life in harsh industrial environments.
• Exceptional holding power provided by the 90° cone point, which bites into materials for a secure, vibration-resistant lock.
• Precise and reliable fastening ensured by the Class 3A thread fit, offering tighter tolerances for high-strength applications.
• High-strength durability from the alloy steel construction and Rockwell C45 hardness, resisting wear and deformation under load.
• Easy installation and removal with the internal hex drive, allowing for high torque application in confined, headless designs.
• Broad regulatory compliance including ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental standards are met for global supply chains.
• Optimized for fine-thread applications with the 1/2"-20 UNF thread, providing improved adjustment and resistance to loosening.

Professional Applications & Engineering Value

This black-oxide alloy steel set screw is engineered to address critical challenges in industrial assembly and precision machinery. The headless design with a hex drive allows for flush mounting in tight spaces, while the 90° cone point creates a permanent, high-strength grip on shafts, collars, and gears, preventing slippage under high vibration and torque. Made from alloy steel and treated to a Rockwell C45 hardness, it withstands repeated stress without stripping or failing. The fine UNF threads with a Class 3A fit ensure minimal backlash and superior clamping force, making it ideal for applications requiring precise alignment and reliability, such as in automotive, aerospace, and heavy equipment manufacturing.

Specification Summary & Compliance

This set screw features a 1/2"-20 UNF thread with a Class 3A thread fit for high precision. It complies with ASME B18.3 specifications and is manufactured from black-oxide alloy steel. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for industrial use.