THT-530 Thru-Hull Fitting Installation Tool

Mfr: Groco

Groco, Thru Hull Tool, THT-530
SKU: 485568
Mfg# THT-530
UNIT: Each
In Stock - Ships out in 1 Business Day
THT-530 makes the installation of standard GROCOy thru-hull fittingspossible by a single installer. Slide the thru-hull fitting, flanged end first, overthe tool. (It will stop at the proper step.) Tie a length of monofilament to theeye and place it into the already-cut hole in the hull of the boat. Applycaulking to the flange of the fitting, and pull the fitting through the holeand against the hull from inside the boat. Thread the mono-filamentthrough the locknut or seacock. With the fitting pulled firmly against thehull the locknut or the seacock may be screwed onto the fitting.

THT-530 fits GROCOThru-hull Fitting Sizes from1/2" through 3"

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GROCO will repair or replace, at its discretion, any part of any of its products which is determined to be defective by the factory or by an authorized GROCO service center within one year of the OEM installation date or the distributors original date of sale.


  • All returns must be recevied within 30 days of receipt of the order.
  • Manufacturer defects reported within 30 days of receipt will be supplied a pre-paid label for return shipping upon approval.
  • Please contact Go2marine LFS Marine and Outdoor for Manufacture Defects, Returns and help with Warranties.