S-98704A325 8-32 x 21/32" Thumb Screws

Key Features & Benefits at a Glance

• Easy manual operation with knurled black acetal plastic head providing superior grip without tools
• Corrosion-resistant performance from 18-8 stainless steel construction for long service life
• Precise thread engagement with Class 3A thread fit ensuring reliable fastening in demanding applications
• Space-saving low-profile design with round head shape ideal for confined assembly areas
• Dual drive compatibility featuring both thumb operation and 9/64" hex drive for flexible installation
• Environmental compliance meeting RoHS 3 and REACH regulations for safe industrial use
• Full threading coverage along the 21/32" length for maximum adjustment and holding power

Professional Applications & Engineering Value

This 8-32 UNC thumb screw combines the corrosion resistance of 18-8 stainless steel with the ergonomic advantages of a knurled black acetal plastic head to solve common assembly challenges. The Class 3A thread fit provides precise engagement in UNC coarse threading applications, reducing cross-threading risks while maintaining consistent clamping force. The low-profile round head design minimizes protrusion in electronic enclosures, instrument panels, and machinery guards where space constraints exist. With full threading along its entire length, engineers achieve maximum adjustment range for panel mounting, access covers, and frequently serviced components. The combination of thumb operation and hex drive compatibility offers installation flexibility in both maintenance and production environments, while the temperature-resistant acetal head maintains performance across industrial operating conditions.

Specification Summary & Compliance

This thumb screw features 8-32 UNC coarse threads with Class 3A thread fit precision, ensuring reliable engagement in industrial fastening applications. The fully threaded design provides consistent holding power along the entire 21/32" length. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for electronics, medical equipment, and other regulated industries. The right-hand thread direction follows standard industrial conventions for intuitive installation.