S-97008A728 5/16"-18 x 1 1/2" Thumb Screws

Key Features & Benefits at a Glance

• Quick tool-free operation with spade head design for easy manual tightening and loosening in tight spaces
• Superior corrosion resistance through zinc-plated steel construction for extended service life in demanding environments
• Exceptional load-bearing capacity with 40,000 PSI tensile strength to withstand heavy mechanical stress
• Reliable thread engagement through Class 2A thread fit ensuring consistent fastening performance
• Enhanced stability and distribution with integrated flange design that prevents over-tightening and surface damage
• Optimized for rapid assembly using UNC coarse threads that resist cross-threading and enable faster installation
• Consistent mechanical properties with Rockwell B55 hardness maintaining dimensional stability under repeated use

Professional Applications & Engineering Value

This zinc-plated steel thumb screw delivers critical advantages in industrial applications where frequent access and reliable fastening are paramount. The combination of UNC coarse threads and Class 2A thread fit ensures smooth engagement while resisting vibration-induced loosening in machinery guards, access panels, and equipment enclosures. The spade head design provides substantial torque application without specialized tools, significantly reducing maintenance downtime. With full threading along the 1½" length, it maintains consistent clamping force across the entire engagement area. The integrated flange distributes pressure evenly, protecting sensitive surfaces from deformation while the zinc plating provides essential corrosion protection in humid or industrial environments where chemical exposure may occur.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit tolerance for consistent performance across mating components. Features 5/16"-18 UNC coarse threads with right-hand direction and fully threaded shank. Compliant with RoHS 3 (2015/863/EU) environmental regulations, ensuring restriction of hazardous substances. Mechanical properties include Rockwell B55 hardness and 40,000 PSI tensile strength for reliable performance in industrial fastening applications.