S-97424A770 1/4"-80 x 3 1/2" Thumb Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ensuring long-term reliability in demanding environments
• Enhanced grip and torque application thanks to the knurled Acetal plastic head, allowing for easy hand-tightening without tools
• Precise thread engagement with Class 3A thread fit and ultra-fine 1/4"-80 threads, minimizing backlash in sensitive assemblies
• Reduced surface damage from the ball tip design, ideal for delicate components and repeated adjustments
• High tensile strength of 60,000 psi provides dependable fastening under mechanical stress
• Wide regulatory compliance with RoHS 3 and REACH, making it suitable for global markets and eco-conscious industries
• Optimized for manual operation with a narrow round-head profile and right-hand threading for intuitive installation

Professional Applications & Engineering Value

Engineered for precision-critical industries, this 18-8 stainless steel thumb screw combines durability with user-friendly design. The ultra-fine thread (1/4"-80) and Class 3A fit ensure minimal play and vibration resistance, crucial in electronics, optical equipment, and medical devices where exact alignment is paramount. The Acetal plastic knurled head offers excellent electrical insulation and chemical resistance, while the ball tip prevents marring on sensitive surfaces. Fully threaded for consistent clamping force, it solves common issues of loosening under dynamic loads, making it a reliable choice for industrial assemblies requiring frequent adjustments without compromising performance.

Specification Summary & Compliance

This thumb screw features a 1/4"-80 UNS ultra-fine thread with Class 3A thread fit for high precision, a length of 3 1/2", and a black Acetal head rated up to 180°F. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for industrial use.