S-98704A900 5/16"-24 x 1/2" Thumb Screws

Key Features & Benefits at a Glance

• Tool-free installation and adjustment with knurled acetal plastic head for secure grip in tight spaces
• Superior corrosion resistance from 18-8 stainless steel construction for long service life in demanding environments
• Precision Class 3A thread fit ensures secure fastening with minimal vibration loosening in critical assemblies
• Low-profile round head design provides clearance in space-constrained applications while maintaining handling comfort
• Fine UNF threading (5/16"-24) delivers enhanced engagement and holding power in thinner materials
• Full threading along 1/2" length allows for flexible positioning and consistent clamping force
• Environmental compliance with RoHS 3 and REACH regulations for use in regulated industries

Professional Applications & Engineering Value

This low-profile thumb screw solves critical access and durability challenges in industrial assemblies. The 18-8 stainless steel body provides excellent corrosion resistance for equipment exposed to moisture, chemicals, or outdoor conditions, while the acetal plastic knurled head offers both electrical insulation and comfortable hand-tightening without tools. The Class 3A UNF fine threading maintains precise engagement in applications requiring frequent adjustments, such as access panels, electronic enclosures, and precision instruments. The combination of black oxide finish and fully threaded design ensures reliable performance in automated assembly environments where consistent torque and positioning are critical.

Specification Summary & Compliance

Manufactured to UNF thread standards with Class 3A thread fit for precision applications. Features 5/16"-24 fine threading with 1/2" fully threaded length and low-profile round head design. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The 18-8 stainless steel construction ensures consistent performance across the specified temperature range of 32° to 180°F.