S-91185A819 1/4"-20 x 2" Thumb Screws

Key Features & Benefits at a Glance

• Effortless hand-tightening with ergonomic multi-lobe head design for superior grip and reduced installation time
• Exceptional corrosion resistance provided by 18-8 Stainless Steel construction, ensuring long-term reliability in harsh environments
• Secure, vibration-resistant fastening achieved through precision Class 3A thread fit for minimal backlash
• Enhanced user comfort and electrical insulation from the durable black Acetal Plastic head, suitable for temperature fluctuations
• Optimized for quick adjustments with coarse UNC threading and partially threaded shank for efficient engagement
• Broad industrial compliance meeting RoHS 3 and REACH regulations for safe, sustainable usage
• Versatile right-hand thread application compatible with standard 1/4"-20 components for easy integration

Professional Applications & Engineering Value

This 1/4"-20 thumb screw combines the strength of 18-8 Stainless Steel with the practicality of a multi-lobe Acetal Plastic head, addressing common industrial challenges like frequent adjustments and exposure to corrosive elements. The partially threaded design ensures precise clamping force without over-penetration, ideal for machinery panels, electronic enclosures, and assembly jigs. Its coarse UNC threads enable rapid installation in high-vibration settings, while the black Acetal head offers excellent grip and thermal stability from 32° to 180°F. Engineered for Class 3A thread fit, it guarantees tight tolerances and repeatable performance, reducing maintenance downtime in manufacturing, aerospace, and automotive sectors.

Specification Summary & Compliance

This thumb screw adheres to UNC coarse thread standards with a 1/4"-20 thread size and Class 3A thread fit for high precision. The partially threaded shank provides a minimum thread length of 1" in a total 2" length, ensuring reliable engagement. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious industrial applications without hazardous substances.