Electro Hardware THS1135M04F16 Aluminum Thumb Screw 1/4-20

Product Description

The ELECTRO HARDWARE THS1135M04F16 is an aluminum thumb screw with a 1/4-20 UNC thread and a knurled head design for secure hand-tightening without tools. The head measures 0.5 inches in diameter and 0.25 inches in height. A shoulder is included, with a shoulder diameter of 0.437 inches and a shoulder length of 0.125 inches. The overall length is 0.75 inches. The head material is brass, while the body is aluminum with an uncoated finish. This fastener is sized for applications where frequent removal and reinstallation by hand is required.

This thumb screw is suited for light industrial, electronic enclosure, and panel assembly applications where tool-free fastening is needed. The knurled head provides grip even with oily or gloved hands. The with-shoulder configuration helps locate and retain mating panels or components. Typical installers include electricians, enclosure assemblers, and maintenance technicians working on access panels, covers, and similar removable assemblies.

Key Features

• 1/4-20 UNC thread for broad compatibility with standard tapped holes and threaded inserts
• Knurled head allows hand-tightening and loosening without tools
• With-shoulder design aids panel alignment and retention
• Aluminum body with brass head — lightweight with corrosion resistance
• Uncoated finish suitable for indoor and protected environments
• Meets multiple standards including ASTM B633 and military specifications

Compatibility

Designed as a standard 1/4-20 UNC thumb screw for use in any application accepting that thread size, including electronic enclosures, access panels, and light mechanical assemblies.

Installation Notes

Installation requires a mating 1/4-20 tapped hole or threaded insert. Ensure the mating thread is clean and free of debris before installation. Hand-tighten only — do not use a wrench or driver, as overtightening can strip the aluminum threads. Confirm panel or cover alignment before fully seating the screw.