Electro Hardware THS1141M01F07 Brass Thumb Screw 1/4-20

Product Description

The ELECTRO HARDWARE THS1141M01F07 is a brass thumb screw designed for hand-tightened fastening applications where tools are not required. It features a knurled head for secure finger grip and is manufactured with a shoulder under the head for precise positioning and load transfer. The 1/4-20 UNC thread is one of the most common unified coarse thread sizes in inch-measurement fastener work. The screw measures 1.125 inches in overall length with a 0.5-inch head diameter and a 0.25-inch head height. A nickel finish provides corrosion resistance. Installers and maintenance technicians in HVAC, electrical enclosure, and light mechanical assembly work commonly use this type of fastener for access panels, covers, and equipment requiring frequent removal.

This thumb screw is suited for light-duty panel and cover fastening in residential and commercial equipment where repeated hand access is needed. The shouldered design helps locate and seat the screw consistently in counterbored or clearance holes. Applications include electrical enclosures, control panels, instrument housings, and similar assemblies using standard 1/4-20 UNC threaded inserts or tapped holes.

Key Features

• Knurled head for tool-free hand tightening and loosening
• Shoulder design for accurate positioning in clearance holes
• 1/4-20 UNC thread — standard inch coarse thread for wide compatibility
• Nickel finish for added corrosion resistance over bare brass
• Brass construction provides conductivity and machinability with low galling risk
• Meets multiple standards including ASTM B633 for electrodeposited coatings

Compatibility

Designed for use in any assembly with a standard 1/4-20 UNC tapped hole or threaded insert requiring a hand-operable thumb screw fastener.

Installation Notes

De-energize any electrical panel or enclosure before servicing fasteners on live equipment. Hand-tighten only — do not use a wrench or driver on the knurled head, as this can damage the head profile or over-torque the threads. Verify the mating hole or insert thread is clean and undamaged before installation. Follow applicable NEC or equipment manufacturer guidelines for access panel fastener requirements.