Gibraltar 43813G Thumb Screw 3/8-16 2in Knurled Black Oxide

Product Description

The GIBRALTAR 43813G is a knurled-head thumb screw machined from 12L14 steel with a black oxide finish. It carries a 3/8-16 UNC thread and measures 2 inches in length under the head, with an overall length of 2.5 inches. The dog-point tip provides positive positioning in receiving holes or detent sockets. The black oxide finish adds mild corrosion resistance and reduces light reflectance. This fastener is installed by hand or with minimal tooling, making it well-suited for panels, fixtures, jigs, and machine guards that require frequent access. Maintenance technicians, machinists, and equipment assemblers are the typical end users.

This thumb screw is appropriate for light-duty clamping and positioning applications in industrial machinery, HVAC equipment panels, electrical enclosures, and fabricated assemblies where tool-free removal is required. The knurled head provides adequate grip for hand-tightening in both clean and lightly oiled work environments. The dog point tip seats into mating detent holes to prevent lateral movement of the clamped component.

Key Features

• 3/8-16 UNC thread for broad compatibility with standard tapped holes
• Knurled head allows tool-free installation and removal
• Dog-point tip seats into detent holes for positive component location
• 12L14 steel construction provides good machinability and consistent thread quality
• Black oxide finish adds mild corrosion resistance
• 1.25-inch head diameter and 0.4375-inch head height for positive hand grip

Compatibility

Designed as a standard UNC thumb screw replacement or new installation fastener for any tapped 3/8-16 hole requiring tool-free access and a dog-point tip for component positioning.

Installation Notes

Installation requires no special tools; hand-tighten only to avoid stripping the 12L14 steel threads. Ensure the mating tapped hole is clean and free of debris before threading. When used on live equipment panels or enclosures, de-energize the equipment before removing or installing the screw. Do not exceed the hand-tight torque range appropriate for this thread size and material grade.