S-98816A238 8-32 x 1/2" Thumb Screws

Key Features & Benefits at a Glance

• Superior grip and tool-free operation with a knurled round head and raised profile for easy hand tightening and loosening in confined spaces
• Excellent corrosion resistance and durability due to the high-quality brass material, ensuring long service life in various environments
• Reliable and precise fastening with a Class 2A thread fit and 8-32 UNC coarse threading, providing secure connections and reducing cross-threading risks
• High mechanical strength offering a tensile strength of 50,000 psi and Rockwell B78 hardness for withstanding significant operational stresses
• Full-length threading for maximum engagement and holding power along the entire 1/2" length, enhancing fastening security
• Compliance with environmental regulations as it is RoHS 3 compliant, making it suitable for use in regulated industries and applications
• Versatile right-hand thread design with standard coarse thread spacing for quick installation and compatibility with common UNC nuts and threaded holes

Professional Applications & Engineering Value

This 8-32 UNC brass thumb screw is engineered to address common industrial challenges such as frequent adjustments, corrosion in harsh environments, and the need for tool-free maintenance. The knurled head provides exceptional grip, reducing slippage and enabling quick hand-tightening in applications like electronic enclosures, machinery panels, and laboratory equipment. Made from brass, it offers inherent corrosion resistance, which is critical in moist or chemically exposed settings, extending component life and reducing replacement costs. The fully threaded design and Class 2A thread fit ensure consistent, reliable fastening, minimizing loosening from vibrations—a common issue in dynamic industrial environments. Ideal for use in assembly lines, telecom devices, and precision instruments, this screw combines ease of use with robust performance, supporting efficient operations and maintenance workflows.

Specification Summary & Compliance

This thumb screw adheres to precise dimensional standards, including a Class 2A thread fit for consistent accuracy and UNC coarse threading (8-32 size) with a thread diameter of 0.164". It is manufactured in compliance with RoHS 3 (2015/863/EU) regulations, including exemption 6(c) for lead in copper alloys, ensuring it meets environmental and safety requirements for industrial use. The specifications cover a length of 1/2", full threading, and a collar diameter of 3/8", providing reliable performance in fastening applications.