GROCO Thru-Hull Installation Tool [THT-530]
SKU: 54082929503

GROCO Thru-Hull Installation Tool [THT-530]

$132.29 $146.99
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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

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Description

GROCO Thru-Hull Installation Tool [THT-530]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

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"

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 54082929503

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4.1 ★★★★★
Based on 1980 reviews
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Product Reviews
E
Verified Purchase
Eric
New York, US
★★★★★ 5
Good value
Size: 24"+20"+10"
Worked fine no issues getting them on.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
L
Verified Purchase
Lilsdad
Massapequa, US
★★★★★ 5
Good quality
Style: 106493
Seems high quality, fit my 2006 Chevy HHR perfectly. Starts great!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
T
Verified Purchase
Thang Nguyen
Birmingham, US
★★★★★ 5
Good starter
Style: 23300-7S000
It is good product. It is cheaper than local store, and it work great after installed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2026
F
Verified Purchase
flys straight
Carnegie, US
★★★★★ 5
an exact replacement as far as I can tell
Style: 12611103
Exact fit, easy to install, still works after several weeks.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
S
Verified Purchase
Sous
Los Angeles, US
★★★★★ 5
It’s worth
Arrive on time and working well 👍🏾
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 7, 2026

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