S-94309A425 M20 Thumb Nuts

Thumb Nuts

1025FA00031 Thumb Nuts
1025FA00031 Thumb Nuts

Image may differ from product. See technical specification for details.

Part No.
Part No. 1025FA00031
Equivalent to mcmaster :
94309A425

Basic Information

System of Measurement Metric
Nut Type Thumb

Dimension Parameters

Width 114.3 mm
Height 47.6 mm

Thread Parameters

Thread Type Metric
Thread Size M20
Thread Direction Right Hand
Thread Pitch 2.5 mm
Thread Spacing Coarse
Thread Fit Class 6H

Head Parameters

Thumb Nut Head Shape Wing
Wing Nut Profile Standard

Material & Strength Parameters

Material Zinc-Plated Iron

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (07/08/2021, 219 SVHC) Compliant

Geometric Parameters

Base Diameter 28.6 mm
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Effortless hand-tightening with a standard wing profile for quick assembly and disassembly without tools, saving time in maintenance and adjustments.
  • Superior corrosion resistance from zinc-plated iron material, ensuring long-lasting performance in harsh industrial environments.
  • Precise thread engagement with Class 6H thread fit, reducing the risk of cross-threading and providing reliable, secure fastening.
  • Durable coarse thread design with M20x2.5 metric threads, offering excellent grip and vibration resistance in high-stress applications.
  • Wide compatibility with a 28.6 mm base diameter and right-hand threading, making it ideal for standard metric bolt systems.
  • Compliance with environmental standards, including RoHS 3 and REACH, ensuring safe use in regulated industries and global markets.
  • Robust construction with dimensions of 114.3 mm width and 47.6 mm height, providing a sturdy grip and handling ease in repetitive tasks.

Professional Applications & Engineering Value

This M20 thumb nut is engineered from zinc-plated iron to address common industrial challenges like corrosion and assembly inefficiency. The Class 6H thread fit ensures precise alignment with metric coarse threads, minimizing the risk of stripping and enhancing load distribution in dynamic applications. Ideal for machinery, automotive, and electrical enclosures, its right-hand thread and wing nut design allow for rapid hand-tightening, reducing downtime in maintenance and production lines. By combining durability with ease of use, this thumb nut supports reliable performance in environments where speed and corrosion resistance are critical, making it a valuable component for B2B procurement in industrial assembly.

Specification Summary & Compliance

This thumb nut features a Class 6H thread fit with M20x2.5 metric coarse threads and a right-hand thread direction, ensuring dimensional accuracy per standard metric specifications. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious industrial applications without hazardous substances.

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