correct size sill plate screws

[Garry B.]

Re: correct size sill plate screws

Steve, I can see where you might say that, but the shadows on the original makes it difficult to say for sure. If they are slightly different, how do we explain those who have acquired original sill plate screws and yet told the same thing I and others were, Bob Peckham being one of those.?

[Gary B.]

Re: correct size sill plate screws

Just an observation, but the "height" of the cone on the repro appears longer than the original, which could prevent it from seating as deep into the sill plate as the original.

[Gary B.]

[Ronald L.]

Re: correct size sill plate screws

let me just say when we measured these back then, we used either 4x or 10x to confirm profile to spec. The repro sits too high, no shadows needed

[Gary B.]

Re: correct size sill plate screws

Ron,

And what do you make of the experience Bob Peckham describes in his post #23?

Gary

[Ronald L.]

Re: correct size sill plate screws

Gary

That 80/82 is the underhead

think of it this way 90 right angle. Just a little less

the screw sits in the hole lower that what’s shown on the right

[Gary B.]

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[Ronald L.]

Re: correct size sill plate screws

Gary
its staring right at you

think 90

and don’t get tied to the edges

if all else fails classical Greek Architecture

if that fails

think what is a v form as it pertains to find the 90, squeeze a little

[Gary B.]

Re: correct size sill plate screws

I’m giving the question of the 80 degree angle one more college try, since I still don’t get what you’re saying Ron. After this posting, I give up. Here’s an image with a line at the left drawn at 80 degrees from the vertical. Which I can see nowhere matching a comparable angle on either the original or the repro screw. Then I drew a line at 80 degrees from the vertical. The only place I can think that matches that angle on the screws is along the top of the head. In which case the 80 degree line matches both screws more or less comparably, but not perfectly in either case. The top of the screw heads seem to be slightly curved to me, not planar. So I still don’t know if the top of the head is where the 80 to 82 degree spec applies. But I can come up with no other location.

Someone else can continue this discussion if they have more to add.

Gary

PS The 80 degrees is not the under side head cone angle. That is around 50 degrees, as I clearly show in post 29.

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[Ronald L.]

Re: correct size sill plate screws

Gary you drew the lines here
Look again crossed lines
Forget past the intersection for a moment

They form a V shape
little less than 90 degrees

[David B.]

Re: correct size sill plate screws


BINGO! Your right on

[Gary B.]

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[Michael G.]

Re: correct size sill plate screws

The countersunk hole in the molding is supposed to have a cylindrical hole of a given depth before the hole becomes conical. It could be that the repro moldings have a slightly shorter cylindrical section than the original moldings, hence the top of the screw sits a bit more proud of the top surface of the molding than it did with the original molding.

If someone has both types of moldings handy, it’s a easy to measure, if only to rule this out.

[Alan D.]

Re: correct size sill plate screws

Well hope this helps a little, have an original 4 hole 1964 sill pate and a 6 hole NOS sill plate (purchased 1970).
Measured smallest hole in each since the install of plate may have enlarged a little. Used a drill index to get size.
What I was surprised to find was that both plates had the same outside diameter of 0.339
You will need to enlarge to read the numbers, but diameter of 4 hole is 0.234 while 6 hole is 0.209

[Gary B.]

Re: correct size sill plate screws

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