I am designing a 6" female thread dia. screw in flange for a marine electronics housing (surface application, low pressure). I am looking for the best thread design (standard) for ease of assembly (~3 turns to attach), and durability. The female mating flange will be metal (Ti), and the male screw in flange will be delrin. I will be using o-rings for sealing, but would like some taper on the threads to prevent back-out. I am inclined to look at API thread standards; any help will be greatly appreciated. Thanks
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Thread Design Question
- Thread starter Nlaw
- Start date
MikeHalloran
Mechanical
I'm not inclined to use thread taper as a locking mechanism when one of the threads is plastic. But the Delrin gives you an opportunity.
If you can arrange for at least one axial element in the female threaded part, e.g. a spline or even a single tooth of a spline, you can mold a flared, elastic mating spline or a number of cantilevered arms with spline teeth in the Delrin part. Make the splines asymmetrical, like a buttress thread, and it will be practically inseparable.
Mike Halloran
NOT speaking for
DeAngelo Marine Exhaust Inc.
Ft. Lauderdale, FL, USA
If you can arrange for at least one axial element in the female threaded part, e.g. a spline or even a single tooth of a spline, you can mold a flared, elastic mating spline or a number of cantilevered arms with spline teeth in the Delrin part. Make the splines asymmetrical, like a buttress thread, and it will be practically inseparable.
Mike Halloran
NOT speaking for
DeAngelo Marine Exhaust Inc.
Ft. Lauderdale, FL, USA
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