Description
On a gold machine, a small coil is not a compromise, it is the tool for the smallest nuggets. The 5 inch Double-D is the Gold Bug's precision coil: a tight, sensitive field that hits tiny gold and separates targets in the trashy, mineralized ground gold country is made of.
At a glance: This is the genuine Fisher 5 in / 13 cm Double-D search coil with the First Texas screw-in connector, built for the Gold Bug, Gold Bug Pro and Gold Bug DP and shared across the Fisher F-series and Teknetics screw-in machines. Its small, sensitive footprint is the one for tiny gold and for separating targets in trashy, mineralized ground.
Genuine First Texas, in stock
This is the genuine First Texas Fisher part 5COIL-GBUG, not an aftermarket copy, and we stock it. It is the 5 in / 13 cm Double-D search coil for the machines listed below. New to coils? Our Search Coil Buying Guide covers size and Double-D versus concentric before you choose.
Which detectors does it fit?
This coil uses the First Texas screw-in connector that the Fisher F-series and the Gold Bug, Gold Bug Pro and Gold Bug DP share. It does not fit the Gold Bug 2, which has its own dedicated connector, or the plug-in Teknetics EuroTek and Digitek. This coil is compatible with: Fisher Gold Bug, Fisher Gold Bug Pro, Fisher Gold Bug DP, Fisher F11, Fisher F19, Fisher F22, Fisher F44, Fisher F5, Teknetics Alpha 2000, Teknetics Delta 4000, Teknetics Gamma 6000, Teknetics Omega 8500, Teknetics G2+, Teknetics EuroTek Pro.
Because it shares the First Texas screw-in connector, this coil also fits the Fisher F-series and Teknetics screw-in machines listed above. It does not fit the Gold Bug 2, which has its own dedicated connector.
Why the 5 in Double-D coil
On a high-frequency gold machine, coil size is sensitivity to small targets. The 5 inch Double-D concentrates the Gold Bug's 19 kHz field into a tight footprint that responds to sub-gram gold a larger coil can skim over, and it separates a nugget from hot rocks and trash in the mineralized ground where gold lives. It also gets into the tight places gold hides: bedrock crevices, tailing piles, brushy creek banks. For covering more open ground on the same machine, the 10 or 11 inch Double-D reaches deeper; for the trashiest, tightest gold ground, this 5 inch is the tool.
Specifications
| Part number | 5COIL-GBUG |
| Type | Double-D search coil, 5 in / 13 cm |
| Connector | First Texas screw-in (twist-lock) connector |
| Compatibility | Fisher Gold Bug, Fisher Gold Bug Pro, Fisher Gold Bug DP, Fisher F11, Fisher F19, Fisher F22, Fisher F44, Fisher F5, Teknetics Alpha 2000, Teknetics Delta 4000, Teknetics Gamma 6000, Teknetics Omega 8500, Teknetics G2+, Teknetics EuroTek Pro |
| Weight | Not published by First Texas. We list only verified figures |
Frequently asked questions
Will this coil fit my detector? This coil uses the First Texas screw-in connector that the Fisher F-series and the Gold Bug, Gold Bug Pro and Gold Bug DP share. It does not fit the Gold Bug 2, which has its own dedicated connector, or the plug-in Teknetics EuroTek and Digitek.
How is this size different from the others? The 5 inch is the small-gold and trash coil. Step up to the 10 inch DD for balanced coverage and the 11 inch DD for the most ground and depth on the Gold Bug.
Can this coil help me find gold? Yes. This coil is built for the Fisher Gold Bug (19 kHz), a dedicated gold machine, and its small size makes it the most sensitive option here for tiny nuggets. Any detector finds gold jewelry; for the smallest gold, the Gold Bug's high frequency plus this coil is the combination. For even higher-frequency nugget hunting, Fisher's Gold Bug 2 runs at 71 kHz.
Is it waterproof? First Texas search coils are submersible; keep the control housing dry. For a verified depth rating on your exact machine, call us and we will confirm before you hunt water.
History Seekers is a small American business and an authorized First Texas dealer (Fisher, Teknetics and Bounty Hunter are one El Paso company). Everyone here detects, top down, for coins, relics, jewelry and gold, and prior field experience is a hiring requirement, not a coincidence. The person who answers your fitment question may be the one who packs the coil and drives it to the UPS drop. The story is more important than the artifact.

