S-91744A587 5/16"-18 x 1 1/2" Thumb Screws

Key Features & Benefits at a Glance

• Enhanced manual operation with comfortable spade head design requiring no tools for quick adjustments
• Superior corrosion resistance from 18-8 stainless steel construction for long service life in harsh environments
• Improved load distribution through integrated flange design that reduces surface pressure and material stress
• Reliable coarse threading with UNC 5/16"-18 pattern for faster installation and reduced cross-threading risk
• Precise thread engagement with Class 2A fit ensuring consistent performance and easy assembly
• Maximum fastening coverage from 1½" fully threaded length for secure connections across various material thicknesses
• Environmental compliance meeting RoHS 3 and REACH standards for safe use in regulated industries

Professional Applications & Engineering Value

This heavy-duty thumb screw addresses critical industrial challenges where frequent access and corrosion resistance are paramount. The 18-8 stainless steel construction provides excellent durability against moisture, chemicals, and temperature variations, making it ideal for electrical enclosures, machinery guards, and panel systems in manufacturing facilities. The flanged spade head design offers exceptional grip for hand-tightening while distributing clamping force over a wider area, preventing damage to sensitive surfaces. With UNC coarse threading and Class 2A thread fit, installation is accelerated while maintaining precise alignment, reducing assembly time in high-volume production environments. The fully threaded 1½" length ensures consistent engagement across various material thicknesses, providing versatile application across multiple industrial sectors.

Specification Summary & Compliance

This thumb screw features 5/16"-18 UNC coarse threading with Class 2A thread fit for standard industrial applications. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in electronic equipment and industrial machinery. The fully threaded design maintains consistent engagement throughout the 1½" length, while the right-hand thread direction follows conventional installation practices.