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Compass Marine How To | all galleries >> Welcome To >> Seacock & Thru-Hull Primer/Pre Information > Thru-hull Threads
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Thru-hull Threads

This photo shows where the thru-hull actually threads into. Thru-hulls are NPS thread and so is the female side of a seacock or a flanged adapter plate so the threads match perfectly.

Nikon D200
1/60s f/4.0 at 24.0mm iso100 full exif

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