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Product Details

Groco Stainless Steel Thru-Hull Fittings are have straight NPS barbed male pipe designed to be used with hose. Their stainless steel construction offers the ultimate in corrosion resistance and protection.

It is recommended that Groco SS thru-hull fittings only be used in low pressure applications.

=Stainless Steel thru-hulls are the best choice for below-the-waterline use. They are supplied complete with a stainless steel locknut with bonding screw

Reviews for Groco Stainless Steel Thru-Hull Fittings

6 of 6 Reviews

June 24, 2021

Beautiful quality
By Tom from Newport, VT

Verified Purchase

I replaced a plastic thru-hull fitting for a bilge pump in a mahogany 1961 Chris Craft and it improved the looks incredibly.

Bottom Line Yes, I would recommend to a friend

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May 13, 2021

high quality
By keysdisease from Key West

Verified Purchase

Used these to replace thru hulls on older GW. Outstanding product and highly recommended. Tool works well for 1" but not as good for. 1 1/2". Hard job working one handed. Rapid shipping and excellent support

Bottom Line Yes, I would recommend to a friend

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April 29, 2020

Groco's products are top of the line
By Rum Runner from Michigan

Verified Purchase

Quality has always been good, fittings worked out great!

Bottom Line Yes, I would recommend to a friend

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May 2, 2016

I would by this product again
By SandaleIII from Great Lakes, Michigan

Verified Purchase

Easy to install, works great!

Bottom Line Yes, I would recommend to a friend

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July 6, 2011

I will replace them all!
By Nelson from Smithfield, Va

I used this to replace all the plastic thru hull fittings on my Grady White boat because the were cracked and leaking. These look better and definitely work better!

Bottom Line Yes, I would recommend to a friend

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December 16, 2008

Description is incorrect, Fitting OK
By Skipper Mike from Simi Valley, Ca.

The description is incorrect for the SS thru hull fitting. It's not designed to accept a seacock or valve directly. Not enough threaded shank. It's designed to attach the hose directly. It appears Groco does not offer a full threaded SS hull fitting, just brass. Its still a good fitting. Lucky I was able to use it on another project instead on returning it.

Bottom Line No, I would not recommend to a friend

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