S-97568A720 1/2"-13 x 2" Thumb Screws

Thumb Screws

0794FA00039 Thumb Screws
0794FA00039 Thumb Screws

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

Part No.
Part No. 0794FA00039
Equivalent to mcmaster :
97568A720

Basic Information

System of Measurement Inch

Head Parameters

Head Type Thumb
Thumb Screw Head Shape Wing
Head Diameter 3/4"
Head Diameter Tolerance -0.0156" to 0.0156"
Head Width 2 1/4"
Head Height 1"

Dimensions

Length 2"

Thread Parameters

Thread Type UNC
Thread Size 1/2"-13
Thread Diameter 0.5"
Thread Spacing Coarse
Thread Direction Right Hand
Thread Fit Class 2A
Threading Fully Threaded

Material & Strength

Material Zinc-Plated Iron
Hardness Not Rated

Temperature & Environment

REACH Compliant
RoHS Compliant
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 large 2 1/4" wing head, eliminating the need for tools in quick-assembly or adjustment scenarios.
  • Superior corrosion resistance from the zinc-plated iron construction, ensuring long-term durability in various industrial environments.
  • Reliable and coarse threading with UNC 1/2"-13 and Class 2A fit, providing a strong, secure hold and faster installation.
  • Full 2" thread engagement for maximum grip and load distribution across the entire fastened length.
  • Right-hand thread design for intuitive, standard installation that aligns with common assembly practices.
  • Compliance with major environmental regulations including RoHS 3 and REACH, making it suitable for global supply chains and sensitive applications.
  • Precise dimensional control with a head diameter tolerance of -0.0156" to 0.0156", ensuring consistent performance and fit.

Professional Applications & Engineering Value

This zinc-plated iron thumb screw is engineered for applications where tool-free, rapid access is critical. The large wing head provides excellent leverage for hand-tightening, making it ideal for panels, access doors, and machinery guards that require frequent removal for maintenance. The UNC coarse thread and Class 2A thread fit ensure a robust connection that resists vibration loosening, while the fully threaded 2" length offers versatile clamping across different material thicknesses. Its zinc plating adds a protective layer against rust and corrosion, extending service life in industrial settings, from electrical enclosures to assembly jigs, without compromising on environmental compliance.

Specification Summary & Compliance

This thumb screw features a 1/2"-13 UNC thread with a Class 2A fit for standard dimensional accuracy and ease of assembly. It is manufactured from zinc-plated iron and is fully threaded over its 2" length with a right-hand thread direction. The product is confirmed to be compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets strict environmental and safety standards for industrial use.

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