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"
Before you order
Complete your purchase through Shopify checkout. Available payment methods and delivery options are shown for your order at checkout.
Find answers about compatibility, delivery and product support. For item-specific questions, include the manufacturer part number when you contact us.
How do I confirm compatibility?
Match the manufacturer part number and review the dimensions, power requirements and compatibility information in the product description. Vehicle, RV and marine applications can differ. Contact our team with your model details if you need help reviewing a part before ordering.
Where can I find warranty information?
Warranty coverage and claim procedures vary by manufacturer and product. Review the manufacturer documentation and any warranty details provided with the item. Contact 4Falcons with the part number and order details for help finding the relevant information.
What delivery options are available?
Delivery options depend on the item and your shipping address. Review the product availability, our shipping policy and the options shown at checkout before placing your order. Any delivery estimate shown is specific to that item and destination.
How do returns work?
Read the Returns & Refunds policy linked in our Customer Support menu before ordering. Eligibility, condition requirements and instructions are explained there. Contact our team with your order number before sending an item back.