Electro Hardware THS1137M01F07 Brass Thumb Screw 1/4-20

Product Description

The ELECTRO HARDWARE THS1137M01F07 is a brass thumb screw with a knurled head and shoulder, designed for hand-tightened fastening applications in light industrial, electrical enclosure, and equipment panel assembly work. It features a 1/4-20 UNC thread, a 0.5-inch head diameter, and a nickel finish over a solid brass body. The shoulder design provides a positive seating surface, making it well suited for applications where alignment or panel retention is required. At 0.875 inches overall length and 0.001 pounds, it is a compact, corrosion-resistant fastener appropriate for electricians, panel builders, and maintenance technicians who need a tool-free fastening solution.

This thumb screw is used in residential and light commercial electrical panel assemblies, HVAC control enclosures, instrumentation housings, and general equipment covers where repeated hand access is required. The knurled head provides positive grip for frequent removal and reinstallation without tools. The with-shoulder configuration suits applications where the fastener must locate against a panel face or sleeve before engaging the mating thread.

Key Features

• 1/4-20 UNC thread for broad compatibility with standard tapped holes
• Knurled head for secure, tool-free hand tightening
• With-shoulder design for panel alignment and positive seating
• Solid brass construction with nickel finish for corrosion resistance
• 0.5-inch head diameter and 0.25-inch head height for low-profile panel mounting
• Meets multiple material and finish standards including ASTM B633

Compatibility

Designed as a standard 1/4-20 UNC thumb screw for use in any application requiring a hand-tightened fastener with a knurled head and shoulder in a tapped 1/4-20 hole.

Installation Notes

Installation requires no special tools — the knurled head is designed for hand tightening only. Ensure the mating thread is clean and free of debris before installation. Do not use a wrench or driver on the knurled head, as this can damage the head or strip the mating thread. Follow applicable electrical or mechanical codes when used in electrical enclosures or control panels.