Groco
Groco THT-530 Thru-hull Installation Tool
- SKU:
- 18040674
- MPN:
- tht-530
- Availability:
- Usually ships the same or next business day. In stock at our FL, NJ warehouses.
- Shipping:
- Calculated at Checkout
- Stock Update:
- 03/07/2026 08:13:57 AM PST
Bulk discount rates
Below are the available bulk discount rates for each individual item when you purchase a certain amount
| Buy 2 | and pay only $137.39 each 137.39 |
| Buy 3 or above | and pay only $135.00 each 135 |
- Stock Update:
- 03/07/2026 08:13:57 AM PST
Description
This item is brand-new, factory sealed.
Thru-Hull Installation Tool
Thru Hull Installation Tool
The Concept:
THT-530 makes the installation of standard GROCO thru-hull fittings possible by a single installer. Slide the thru-hull fitting, flanged end first, over the tool. (It will stop at the proper step.) Tie a length of monofilament to the eye and place it into the already-cut hole in the hull of the boat. Apply caulking to the flange of the fitting, and pull the fitting through the hole and against the hull from inside the boat. Thread the mono-filament through the locknut or seacock. With the fitting pulled firmly against the hull the locknut or the seacock may be screwed onto the fitting.
THT-530 fits GROCO Thru-hull Fitting Sizes from 1/2" through 3"
Warranty Information
