Electro Hardware THS1004M01F07 Brass Thumb Screw 4-40

Product Description

The ELECTRO HARDWARE THS1004M01F07 is a 4-40 UNC brass thumb screw with a knurled head and shoulder, finished in nickel. Designed for hand-tightening applications, it provides a secure, tool-free fastening solution commonly used in enclosures, panels, electronic assemblies, and light-duty mechanical fixtures. The knurled head offers reliable grip, while the shouldered shank controls seating depth and protects mating surfaces. At 0.75 inches overall length, it suits compact assembly environments where space is at a premium. The nickel finish provides corrosion resistance appropriate for indoor and light-duty industrial use. Machinists, assemblers, and field technicians working with instrumentation, electrical panels, and enclosure hardware routinely stock this fastener type.

This thumb screw is suited for residential and commercial applications involving electronic enclosures, control panels, instrument housings, and similar assemblies requiring frequent access without tools. The 4-40 thread size is standard in light-duty electronic and instrumentation hardware, making this a commonly specified fastener in both OEM manufacturing and field-service environments. It installs by hand in tapped 4-40 holes, with the integral shoulder providing positive stop and alignment.

Key Features

• 4-40 UNC thread for compatibility with standard light-duty electronic and instrumentation hardware
• Knurled head enables secure hand-tightening without tools
• Integral shoulder controls seating depth and protects mating surfaces
• Brass construction with nickel finish for corrosion resistance in indoor environments
• Meets QQ-B-626B Comp 22 and QQ-N-290A standards
• Compact 0.75-inch overall length suits tight assembly spaces

Compatibility

Designed as a standard 4-40 UNC thumb screw for use in tapped holes conforming to Unified National Coarse thread specifications in electronic enclosures, instrument panels, and light-duty mechanical assemblies.

Installation Notes

This fastener is installed by hand into a pre-tapped 4-40 UNC hole. De-energize any electrical assembly before accessing internal panels or fasteners. The shouldered design seats positively against the mating surface; do not force beyond the shoulder stop. Verify thread engagement is adequate for the load before returning the assembly to service.