S-91744A160 1/4"-20 x 2 1/2" Thumb Screws

Key Features & Benefits at a Glance

• Enhanced manual grip and torque application with the spade head design, reducing tool dependency and speeding up assembly/disassembly cycles.
• Superior corrosion resistance in demanding environments provided by 18-8 Stainless Steel, ensuring long-term reliability and reduced maintenance.
• Secure seating and increased bearing surface from the integrated flange, helping to prevent loosening under vibration and distributing load effectively.
• Quick and easy installation with coarse UNC threads and Class 2A fit, enabling faster engagement and reliable performance in a variety of materials.
• Full-length threading for maximum adjustability and holding power along the entire 2 1/2" length, offering versatile fastening depth options.
• Compliance with major environmental regulations including RoHS 3 and REACH, ensuring safe use in regulated industries and global market acceptance.
• Right-hand thread direction for standard operation, facilitating intuitive installation by maintenance personnel and reducing assembly errors.

Professional Applications & Engineering Value

This 18-8 Stainless Steel Thumb Screw is engineered to address common challenges in industrial maintenance, electronics, and machinery assembly where frequent access is required. The spade head provides exceptional manual grip, eliminating the need for tools in tight spaces and reducing downtime during adjustments. Its flanged design increases stability and resists pull-through, making it ideal for securing panels, access doors, and components subject to vibration. The coarse UNC thread (1/4"-20) and Class 2A fit ensure quick, reliable engagement in both metal and plastic assemblies, while the fully threaded shank offers consistent clamping force. Made from corrosion-resistant stainless steel, this screw maintains integrity in humid or corrosive settings, providing a durable fastening solution for OEMs and MRO applications.

Specification Summary & Compliance

This thumb screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy and reliable performance. It is fully threaded with a right-hand thread direction and coarse thread spacing. The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety standards for industrial use.