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Old 28 January 2008, 12:01   #51
Country: UK - Scotland
Make: HumberOceanOffshore
Length: 8m +
Engine: Volvo KAD300/DPX
Join Date: Oct 2002
Posts: 5,040


jwalker is offline   Reply With Quote
Old 28 January 2008, 12:18   #52
Country: UK - Scotland
Boat name: Wildheart
Make: Humber/Delta Seasafe
Length: 5m +
Engine: Merc 60 Clamshell
MMSI: 235068449
Join Date: Apr 2007
Posts: 4,614
Jumping back to the screws for a minute, here's a couple of websites that will hopefully explain the the technology of "Thread forming" (to give them their proper name) screws. Self tappers are strictly a whole different ball game.....
gives a pretty picture
is more verbal, but gives you the picture.

Long & short of it is there's thread forms, and there's thread forms. What sticks like lue to plastic or metal may pull straight out of wood & vice versa.

I'l lleave you guys to carry on talking about the wood now.....

9D280 is offline   Reply With Quote

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