S-92991A192 8-32 x 3/8" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from durable brass construction, ideal for harsh environments and extended service life
• Precise, secure locking with Class 3A thread fit ensuring tight tolerances and reliable fastening in critical assemblies
• High-strength performance backed by Rockwell B55 hardness, providing excellent resistance to wear and deformation
• Easy installation and removal with the 5/64" hex drive, allowing for efficient maintenance and adjustments
• Effective grip and minimal surface damage from the cup tip design, perfect for securing rotating components like shafts and pulleys
• Broad compatibility with 8-32 UNC coarse threading, simplifying sourcing and replacement in various industrial applications
• Compliance with major standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental responsibility

Professional Applications & Engineering Value

This 8-32 UNC brass set screw is engineered to address common industrial challenges such as corrosion, vibration loosening, and component slippage. The brass material offers inherent resistance to rust and galvanic corrosion, making it suitable for use in electrical components, marine equipment, and plumbing systems where moisture is a concern. With its Class 3A thread fit and coarse thread spacing, it provides a secure, tight hold that withstands dynamic loads and reduces the risk of unintentional loosening in machinery. The headless design and cup tip allow for flush mounting and concentrated point pressure, ideal for securing gears, collars, and other rotary parts without protruding obstructions. This combination of features ensures reliable performance in precision set screw applications, enhancing operational safety and reducing maintenance downtime.

Specification Summary & Compliance

This set screw adheres to inch system measurements with a thread size of 8-32 UNC, thread diameter of 0.164", and length of 3/8". It features a Class 3A thread fit for high precision and a right-hand thread direction with coarse spacing. Manufactured in compliance with ASME B18.3 specifications, it also meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring it is free from hazardous substances and safe for various industrial uses.