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08-11-2010, 02:10 PM | #1 |
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Side Curtain Windshield Fasteners - Thread?
Does anyone know the thread size of the repro windshield fastener kit (A-37103)? I don't have a kit here to check. I was about to run a 10-32 tap through the stanchion holes to chase the threads but decided to measure the old fastener first. Good thing! Appears to be 10-30, not 10-32, which is a special tap but I'm wondering what the repro fasteners are? Are they cut correctly to 10-30?
This is the kit: http://www.snydersantiqueauto.com/se...7103&x=89&y=10 Last edited by CCWKen; 08-11-2010 at 02:13 PM. Reason: add link |
08-11-2010, 02:20 PM | #2 |
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Re: Side Curtain Windshield Fasteners - Thread?
Well, that figures. I don't know why I thought the repro stuff would be correct. I looked at the Lift-The-Dot studs that are sold individually. They say 10-32.
Thanks anyway. |
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08-11-2010, 02:32 PM | #3 |
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Re: Side Curtain Windshield Fasteners - Thread?
I got all mine from LB and they were 10-32. Fit both old and new parts.
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08-11-2010, 02:34 PM | #4 |
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Re: Side Curtain Windshield Fasteners - Thread?
10-32 is the correct size
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08-11-2010, 02:44 PM | #5 |
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Re: Side Curtain Windshield Fasteners - Thread?
1) I checked my thread pitch gauge, and a 30tpi feeler doesn't exist.
2) 30tpi isn't even included in a tap drill chart I'm looking at. 3) I've accumulated a pretty good collection of tiny taps over the years...but 10-30 isn't present. The thread on your OLD fastener is most likely stretched from overtightening...creating the allusion of less threads per inch. |
08-11-2010, 03:13 PM | #6 |
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Re: Side Curtain Windshield Fasteners - Thread?
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It's mute point now since the repro studs are 10-32. I'll just recut the holes to 10-32. |
08-11-2010, 04:33 PM | #7 |
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Re: Side Curtain Windshield Fasteners - Thread?
Did you mean these?
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08-11-2010, 07:29 PM | #8 |
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Re: Side Curtain Windshield Fasteners - Thread?
Craig;
Does the book in the lower left pic have by year an model, each part and how many per car? I don't have a clue what I need for my car. Thanks |
08-12-2010, 11:45 AM | #9 |
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Re: Side Curtain Windshield Fasteners - Thread?
Neither the books pictured, nor several parts catalogs I scanned indicate how many studs required...Although...Bratton's lists kit A37160 as follows:
Windshield post curtain studs-for open car -12 original type studs made from brass, nickel plated.1928-35 (the picture shows 2 different lengths) Buy the kit & you should be fine?? |
08-12-2010, 05:35 PM | #10 |
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Re: Side Curtain Windshield Fasteners - Thread?
A 10-30 screw is called a Special Thread (N.S.), outside dia. of screw is .1900, the tap drill is a #22, and the decimal equivalent of the drill is 0.1570. I ran into the same problem the other day and did as mentioned above - retapped to 10-32 and locktited it in.
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09-04-2010, 09:40 AM | #11 |
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Re: Side Curtain Windshield Fasteners - Thread?
Drill size for 10-32 is 21 not 22
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09-05-2010, 11:53 AM | #12 |
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Re: Side Curtain Windshield Fasteners - Thread?
You are correct, 10-32 tap size is #21, but Special Thread N.S. 10-30 is #22, which is what I think the originals were tapped. But is a moot point, unless fixing originals, as replacements are 10-32 N.F.
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