S-98704A805 5/16"-18 x 5/8" Thumb Screws

Key Features & Benefits at a Glance

• Enhanced grip and torque application with knurled acetal plastic head for secure manual tightening without tools
• Superior corrosion resistance from 18-8 stainless steel construction, ideal for humid or chemically exposed environments
• Space-saving low-profile design allows installation in tight clearance applications where standard screws won't fit
• Dual-operation flexibility with both thumb operation and 1/4" hex drive for versatile installation options
• Precision thread engagement with Class 3A UNC coarse threads ensuring reliable fastening in industrial assemblies
• Temperature resilience maintaining performance across 32° to 180°F operating range
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global manufacturing applications

Professional Applications & Engineering Value

This low-profile thumb screw combines the corrosion-resistant properties of 18-8 stainless steel with the exceptional grip of a knurled acetal plastic head, solving critical challenges in industrial assembly. The fully threaded 5/16"-18 UNC coarse thread with Class 3A fit provides rapid installation and vibration resistance in equipment panels, electronic enclosures, and machinery access points. The black finish offers both aesthetic consistency and additional surface protection, while the dual-operation capability (manual thumb turn or hex drive) enables efficient maintenance cycles in production environments where tool access may be limited.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 3A thread fit and UNC thread form (5/16"-18). Features include 5/8" length, 1" head diameter, and 13/32" head height. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and global market acceptance for industrial and commercial applications.