S-97568A599 5/16"-18 x 3" Thumb Screws

Key Features & Benefits at a Glance

• Enhanced manual operation efficiency with large 1 3/4" wing head design for superior grip and quick hand-tightening without tools
• Reliable corrosion resistance through zinc-plated iron construction, extending service life in various industrial environments
• Secure and precise fastening with Class 2A thread fit ensuring consistent engagement and vibration resistance in assemblies
• Versatile installation compatibility through fully threaded 3" length and coarse UNC thread pattern for rapid advancement in diverse materials
• Simplified inventory management with standardized 5/16"-18 UNC right-hand threading compatible with common industrial components
• Regulatory compliance assurance meeting RoHS 3 and REACH environmental standards for global manufacturing applications
• Dimensional stability with controlled head diameter tolerance (±0.0156") ensuring consistent performance across production runs

Professional Applications & Engineering Value

Engineered for repeated manual adjustments in industrial equipment, electronic enclosures, and machinery access panels, this zinc-plated iron thumb screw solves critical operational challenges. The fully threaded design with coarse UNC threading provides maximum engagement depth while the wing head configuration delivers exceptional torque application without specialized tools. Particularly valuable in maintenance-intensive environments where quick disassembly is essential, the Class 2A thread fit maintains precise alignment while resisting loosening from vibration. The heavy-duty construction withstands frequent handling in manufacturing, telecommunications, and automotive applications where reliable manual fastening solutions are paramount.

Specification Summary & Compliance

This thumb screw maintains Class 2A thread fit tolerance per UNC standards with 5/16"-18 coarse threading and right-hand direction. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Dimensional specifications include 5/8" head diameter with ±0.0156" tolerance, 1 3/4" wing head width, and 3" fully threaded length for consistent performance across industrial applications.