Gibraltar TS-104-G Brass Thumb Screw 3/8-16 Knurled

Product Description

The GIBRALTAR TS-104-G is a knurled-head thumb screw designed for hand-tightening applications where tools are not available or practical. The fastener features a 3/8-16 UNC thread standard and is constructed with a brass threaded body and a black plastic knurled head, making it well suited for panel access, enclosure covers, and equipment assemblies that require frequent removal. The overall length measures 0.88 inches, with a head diameter of 1.42 inches and a head height of 0.49 inches. A machined shoulder with a 0.71-inch diameter provides positive seating against mating surfaces during installation.

This thumb screw is commonly used in industrial, electrical, and mechanical enclosure applications where repeated hand access is required. The knurled head offers a secure grip without additional tooling, and the shouldered body helps align and retain panels or covers accurately. It is appropriate for use in light-duty assemblies across HVAC equipment panels, electrical enclosures, control boxes, and general trade equipment where 3/8-16 UNC fastening points are present.

Key Features

• 3/8-16 UNC thread for broad compatibility with standard inch-system tapped holes
• Brass body construction provides corrosion resistance and reliable thread engagement
• Black plastic knurled head allows secure hand-tightening without tools
• Shouldered design with 0.71-inch shoulder diameter for precise panel alignment and seating
• Compact form factor at 0.88 inches overall length suits tight enclosure applications
• Sold individually, allowing single-piece replacement or procurement

Compatibility

Designed as a standard 3/8-16 UNC thumb screw replacement suitable for use in industrial enclosures, control panels, and equipment covers requiring hand-operable fasteners with a shouldered body style.

Installation Notes

Installation is performed by hand; no tools are required under normal use conditions. Before servicing any panel or enclosure secured by thumb screws, de-energize the equipment and follow applicable NFPA 70 (NEC) lockout/tagout procedures. Verify that the mating tapped hole matches the 3/8-16 UNC thread standard before installation. Do not over-torque by applying tools to the plastic head, as this may crack the head or damage the thread engagement.