S-91185A839 5/16"-18 x 3/4" Thumb Screws

Key Features & Benefits at a Glance

• Easy hand-tightening operation with multi-lobe plastic head design for superior grip without tools
• Corrosion-resistant 18-8 stainless steel construction ensures long-term reliability in demanding environments
• Precise Class 3A thread fit provides secure fastening with minimal vibration loosening
• Temperature-resistant acetal plastic head maintains performance from 32° to 180°F
• Fully threaded 3/4" length offers maximum adjustment flexibility and holding power
• Coarse UNC threading enables quick installation and removal in various materials
• Compliant with RoHS 3 and REACH regulations for safe use in regulated industries

Professional Applications & Engineering Value

This 5/16"-18 thumb screw combines the corrosion resistance of 18-8 stainless steel with the ergonomic benefits of a black acetal plastic multi-lobe head, creating an ideal solution for frequent-access panels, machinery guards, and electronic enclosures. The Class 3A thread fit ensures precise engagement with mating components, reducing the risk of cross-threading while providing vibration resistance in industrial settings. The fully threaded design allows for maximum adjustability in applications requiring variable clamping pressure. Engineered for environments where tool-free operation is essential, this thumb screw delivers reliable performance in maintenance panels, laboratory equipment, and assembly fixtures while meeting stringent regulatory requirements.

Specification Summary & Compliance

This thumb screw features 5/16"-18 UNC coarse threading with Class 3A thread fit for precision engagement, manufactured from 18-8 stainless steel with a black acetal plastic multi-lobe head. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for industrial and commercial applications.