Menu

Tapered thread thru-hulls ?

Search this Thread

Prev

Previous Post

Next Post

Next

#6

Report Post

John

Posts: n/a

Default

Tapered thread thru-hulls ?

(Trent D. Sanders) wrote in message . com...
Does anyone know of a source for BRONZE tapered thread [pipe thread]
thru-hulls?

The thru-hulls sold by Worst Marine and others are all "straight
thread" with straight thread tightening nuts. The sea-cocks that go
on these thru-hulls are also straigh threaded, but are designed to be
bolted [ usually 3 bolts ] through the hull also. It would seem that
for a fiberglass hull the less holes the better.

So many people put a tapered thread ball valve [seems like all ball
valves are tapered threaded] on to the straight thread thru-hull. Not
a good idea.

T. Sanders
S/V Cimba

The reason you can't find a tapered thread on a thru-hull is because
you don't want tapered threads on a thru-hull. The standard nut on a
thru-hull guarentees that the nut is holding the back of the face of
the thru-hull tight to the hull, the same holde true with the backing
material and nut. Exerting a clamping force on the thru-hull, giving
you a good seal to the hull. The problem with the tapered design would
be that the nut, which might be tight, would be tight to the thru-hull
threads, but may not be exerting any clamping force on the thru-hull
face. The nut could be nice and tight, and the thru-hull might be
loose to the hull.

Reply With Quote

Reply With Quote

Thread Tools	Search this Thread
Show Printable Version	Search this Thread: Advanced Search
Display Modes
Switch to Linear Mode Switch to Hybrid Mode Threaded Mode

Posting Rules
Smilies are On [IMG] code is Off HTML code is Off Trackbacks are On Pingbacks are On Refbacks are On

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Fine Thread vs Course Thread	Gary Warner	General	15	June 22nd 04 08:30 PM
Another Gorgeous Bay Day!	John H	General	45	June 13th 04 08:42 PM
Where to buy 5 cord thread?	Buck Wild	Boat Building	0	September 19th 03 08:27 AM
Do plywood hulls absorb water & expand?	Gary Warner	Boat Building	5	August 18th 03 09:52 PM
Balsa core hulls & Sea Rays	Capt Lou	General	1	July 19th 03 02:34 AM

All times are GMT +1. The time now is 09:15 AM.

About Us

"It's about Boats"

Contact Us BoatBanter Home Privacy Statement

Copyright © 2017