S-92991A655 1/2"-13 x 3/4" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance due to brass construction, ideal for harsh industrial environments
• High-strength, precision threads with Class 3A fit ensure reliable, vibration-resistant fastening
• Easy installation and removal with the 1/4" hex drive, providing excellent torque transmission
• Secure component positioning with the cup tip design, minimizing surface damage and slippage
• Exceptional durability backed by Rockwell B55 hardness for long service life under load
• Broad compatibility with 1/2"-13 UNC coarse threads, suitable for various inch-based assemblies
• Safe for regulated applications with full compliance to RoHS 3 and REACH environmental standards

Professional Applications & Engineering Value

This brass set screw is engineered to address common industrial challenges such as corrosion, vibration loosening, and precise component alignment. The headless design and 1/4" hex drive allow for flush mounting in tight spaces, while the Class 3A thread fit and UNC coarse thread provide superior holding power in dynamic applications. Made from durable brass material, it resists rust and galvanic corrosion, making it ideal for machinery, electrical enclosures, and marine equipment. The cup tip ensures minimal marring on shafts and gears, preserving the integrity of adjusted components. Fully compliant with ASME B18.3, this screw delivers consistent performance in industrial set screw applications requiring reliability and precision.

Specification Summary & Compliance

This set screw features a 1/2"-13 UNC coarse thread with Class 3A thread fit for high precision and strength. It meets ASME B18.3 manufacturing specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring safety and environmental responsibility. The right-hand thread direction and inch system measurements provide compatibility with standard industrial components.