S-98704A810 5/16"-18 x 3/4" Thumb Screws

Key Features & Benefits at a Glance

• Tool-free installation and adjustment with comfortable thumb-operated design and knurled head for secure grip
• Enhanced corrosion resistance from 18-8 stainless steel construction with black finish for durable performance
• Secure fastening in coarse thread applications with precision UNC 5/16"-18 threads and Class 3A fit
• Dual drive capability featuring both thumb operation and 1/4" hex drive for flexible installation
• Temperature-resistant performance with acetal plastic head stable from 32° to 180°F
• Low-profile round head design for applications requiring minimal protrusion and smooth appearance
• Full thread engagement along the entire 3/4" length for maximum holding power

Professional Applications & Engineering Value

This black 18-8 stainless steel thumb screw combines the corrosion resistance of stainless steel with the ergonomic benefits of a knurled acetal plastic head, making it ideal for frequent access panels, electronic enclosures, and machinery guards. The UNC coarse thread with Class 3A fit ensures quick installation and reliable performance in vibration-prone environments. The dual thumb operation and hex drive capability provides installation flexibility, while the low-profile round head minimizes snagging in tight spaces. Perfect for industrial maintenance, electronics, and assembly applications requiring repeated access without compromising thread integrity or fastener durability.

Specification Summary & Compliance

This thumb screw features precision 5/16"-18 UNC coarse threads with Class 3A thread fit for superior engagement. The fully threaded 3/4" length provides consistent holding power. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in industrial and electronic applications worldwide.