S-91746A216 8-32 x 3/8" Thumb Screws

Key Features & Benefits at a Glance

• Enhanced manual grip and torque application with a fully knurled round head, reducing tool dependency and speeding up assembly in tight spaces.
• Superior corrosion resistance and durability thanks to 18-8 Stainless Steel construction, ideal for harsh or washdown environments.
• High mechanical strength and load-bearing capability with 80,000 psi tensile strength and Rockwell B83 hardness for reliable, long-term fastening.
• Precise and reliable thread engagement ensured by the UNC coarse thread with Class 2A fit, promoting easy starting and vibration resistance.
• Full-length threading for maximum holding power along the entire 3/8" length, providing uniform clamping force and versatility in various material thicknesses.
• Compliance with stringent environmental regulations including RoHS 3 and REACH, making it suitable for global industrial and electronic applications.
• Right-hand thread direction for standard installation, ensuring intuitive and error-free manual tightening in common assembly processes.

Professional Applications & Engineering Value

This 8-32 UNC thumb screw is engineered to address common industrial challenges such as frequent adjustments, corrosion in demanding environments, and the need for tool-less operation. The 18-8 Stainless Steel material offers excellent resistance to rust and oxidation, which is critical in applications like electronics enclosures, machinery panels, and medical devices where cleanliness and durability are paramount. The fully threaded and coarse thread design ensures quick installation and robust holding in softer materials or plastics, reducing the risk of stripping. The knurled head provides a secure grip even with gloved hands, enhancing operator efficiency in assembly lines, maintenance hatches, and prototyping setups. Its compliance with RoHS and REACH standards further supports its use in regulated sectors, ensuring safety and environmental responsibility without compromising on high tensile strength performance.

Specification Summary & Compliance

This thumb screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy and ease of assembly. Key specifications include a thread size of 8-32, thread diameter of 0.164", coarse thread spacing, and a length of 3/8". It is manufactured from 18-8 Stainless Steel with a hardness of Rockwell B83 and tensile strength of 80,000 psi. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets current environmental and safety requirements for industrial components.