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GROCO Thru-Hull Installation Tool [THT-530]
GROCO Thru-Hull Installation Tool [THT-530]
GROCO Thru-Hull Installation Tool [THT-530]
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GROCO Thru-Hull Installation Tool [THT-530]

Marsoni M251S
Sale price$164.99
Pay 4 payments of $41.25 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
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
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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]
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4.2 ★★★★★
Based on 157 reviews
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Product Reviews
A
Verified Purchase
Austin Grimes
Alexandria, US
★★★★★ 5
Good wire
Color: Black, Size: 15 feet
Great wiring
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 20, 2025
Verified Purchase
626
Battle Creek, US
★★★★★ 5
Great wire.
Color: Black, Size: 15 feet
The flexibility is wonderful to work with. I used the red and black for a car audio application and it was a perfect choice for bending and snaking through the engine compartment and interior of the car. I have some just sitting on a bench and it still hasn't corroded and it's at least 3 years old. The insulation is very supple and has a nice feel to it and it carried current no problem of course.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 4, 2023
D
Verified Purchase
David w
Carnegie, US
★★★★★ 5
Size
Color: Black, Size: 20 Feet
Perfect fit
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 14, 2025
P
Verified Purchase
Paul Reichert
Birmingham, US
★★★★★ 5
Great Quick service
Color: Black, Size: 15 feet
Nice super heavy wire
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 22, 2025
T
Verified Purchase
tuck
Charlottesville, US
★★★★★ 5
top wire.
Color: Black, Size: 10-feet
great wire, work like a charm, easy to handle, great for battery cables. priced right for size
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 3, 2020

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