S-91882A226 6-32 x 7/16" Thumb Screws

Key Features & Benefits at a Glance

• Enhanced grip and torque application with knurled, raised round head design for easy manual tightening without tools
• Superior corrosion resistance and durability thanks to black-oxide steel construction, extending service life in demanding environments
• High load-bearing capacity with 70,000 psi tensile strength and Rockwell B84 hardness for reliable performance under stress
• Quick and secure fastening enabled by coarse UNC threads and Class 2A fit, reducing installation time and preventing cross-threading
• Full thread engagement along the 7/16" length for maximum holding power and alignment in assemblies
• Broad industrial compatibility with right-hand thread direction and standard 6-32 UNC size, fitting common equipment and components
• Compliance with global environmental standards including RoHS 3 and REACH, ensuring safe and sustainable use in regulated markets

Professional Applications & Engineering Value

This black-oxide steel thumb screw is engineered to address common industrial challenges such as frequent adjustments, vibration loosening, and harsh operating conditions. The knurled raised head provides exceptional manual grip, allowing operators to tighten or loosen quickly without tools—ideal for maintenance panels, electronic enclosures, and machinery covers. The coarse UNC thread and Class 2A fit ensure smooth engagement and resistance to stripping, while the black-oxide finish enhances corrosion resistance, making it suitable for automotive, aerospace, and electronics applications where reliability and ease of use are critical. Its fully threaded design offers consistent clamping force, reducing the risk of component misalignment and improving overall assembly integrity.

Specification Summary & Compliance

This thumb screw adheres to UNC thread standards with a Class 2A thread fit for precise dimensional accuracy and interchangeability. Key specifications include a 6-32 thread size, 7/16" length, and coarse thread spacing. The product is manufactured in compliance with RoHS 3 (2015/863/EU) under exemption 6(a)-I for lead as an alloying element in steel, and is REACH (EC 1907/2006) compliant as of January 17, 2023, ensuring adherence to health and environmental safety regulations.