Electro Hardware THS3044M01F21 Brass Thumb Screw 10-32

Product Description

The ELECTRO HARDWARE THS3044M01F21 is a brass thumb screw with a knurled head, designed for tool-free fastening in applications where hand-tightening is required. It carries a 10-32 UNC thread and measures 11/16 inches in overall length with a 1/2-inch thread length. The knurled head provides grip for finger-tightening without a driver. The head diameter is 7/16 inches (0.4375 inches) and the head height is 3/16 inches (0.1875 inches). This fastener is made from brass with a zinc finish, offering corrosion resistance suitable for both indoor and light industrial environments. Electricians, HVAC technicians, panel builders, and equipment assemblers commonly use this style of thumb screw in enclosures, control panels, and equipment covers.

This thumb screw is suited for residential and commercial applications where panel covers, junction boxes, instrument housings, or access doors require repeated removal and reinstallation without tools. The 10-32 UNC thread is a standard size commonly found in electrical enclosures, electronic equipment, and HVAC control panels. Its brass construction makes it a practical choice in environments where a non-ferrous fastener is preferred to reduce galvanic corrosion risk when mating with aluminum or brass threaded inserts.

Key Features

• 10-32 UNC thread for broad compatibility with standard threaded inserts and panels
• Knurled head allows secure finger-tightening without tools
• Brass construction with zinc finish for corrosion resistance
• Overall length of 11/16 inches with 1/2-inch thread engagement length
• Without-shoulder design for flush or near-flush seating
• Meets multiple industry standards including ASTM B633

Compatibility

Designed as a standard 10-32 UNC thumb screw for use in electrical enclosures, control panels, instrument housings, and equipment covers requiring tool-free fastener access.

Installation Notes

De-energize any electrical panel or enclosure before removing or replacing fasteners to comply with NFPA 70E safe work practices. Hand-tighten only — do not use a screwdriver or power tool on knurled thumb screws, as over-torquing can strip the threads or crack the head. Verify that the mating threaded insert or nut matches the 10-32 UNC thread standard before installation.