S-97568A587 5/16"-18 x 1 1/2" Thumb Screws

Key Features & Benefits at a Glance

• Enhanced manual operation with wide 1-3/4" wing head design for maximum grip and torque application without tools
• Superior corrosion resistance through zinc-plated iron construction, extending service life in industrial environments
• Reliable thread engagement with Class 2A UNC coarse threads ensuring secure fastening in various materials
• Full-length threading across the entire 1-1/2" length provides consistent holding power throughout the fastener
• Precision dimensional control with head diameter tolerance of ±0.0156" for consistent performance in repeated applications
• Environmental compliance meeting RoHS 3 and REACH standards for safe use in regulated industries
• Right-hand thread direction following industry standards for intuitive installation and removal

Professional Applications & Engineering Value

This zinc-plated iron thumb screw delivers exceptional value in applications requiring frequent adjustments or tool-free operation. The wing head design with 1-3/4" width provides substantial surface area for hand tightening, making it ideal for access panels, electrical enclosures, and machinery guards where quick maintenance is essential. The UNC coarse thread pattern and Class 2A thread fit ensure rapid installation while maintaining secure fastening in materials ranging from plastics to metals. The fully threaded 1-1/2" length allows for versatile engagement depths, while the zinc plating protects against corrosion in demanding industrial environments. These thumb screws solve the common challenge of balancing accessibility with reliable fastening performance in maintenance-intensive applications.

Specification Summary & Compliance

This thumb screw features 5/16"-18 UNC coarse threads with Class 2A thread fit for standard industrial applications. The dimensional specifications include a 5/8" head diameter with ±0.0156" tolerance, 1-1/2" fully threaded length, and right-hand thread direction. The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for use in regulated industries and applications requiring environmental responsibility.