C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Dash defroster vent screw length requested

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Old Nov 8, 2012 | 04:41 PM
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Default Dash defroster vent screw length requested

Putting my dash back in (again) for the 20th time. Hopefully the last for a long-while.

Since the first time it was removed, I never replaced those two screws -- on either side of the defroster vent. And, they're long gone.

Local hardware sells this type of black trim screw...but I need to know the length. Anyone remember? Maybe 1", Maybe longer?

This is for the early flat dash (89).

Oh yeah...Are those washered, hex screws? Or philips "trim" screws?

Thanks!



BTW...As an extra anti-squeak measure, I lined the complete underside and edges of the dash with black felt. Really wedges it in their tight now! Hopefully, that will make it squeak-free. Probably should use some of that felt on the corners of my roof(s). Is it Ecklers who sells those anti-roof squeakers -- ans has a drawing of the those small pieces? I kinda remember what they look like...

Last edited by GREGGPENN; Nov 8, 2012 at 04:47 PM.
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Old Nov 8, 2012 | 04:55 PM
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Originally Posted by GREGGPENN
Putting my dash back in (again) for the 20th time. Hopefully the last for a long-while.

Since the first time it was removed, I never replaced those two screws -- on either side of the defroster vent. And, they're long gone.

Local hardware sells this type of black trim screw...but I need to know the length. Anyone remember? Maybe 1", Maybe longer?

This is for the early flat dash (89).

Oh yeah...Are those washered, hex screws? Or philips "trim" screws?



Thanks!




BTW...As an extra anti-squeak measure, I lined the complete underside and edges of the dash with black felt. Really wedges it in their tight now! Hopefully, that will make it squeak-free. Probably should use some of that felt on the corners of my roof(s). Is it Ecklers who sells those anti-roof squeakers -- ans has a drawing of the those small pieces? I kinda remember what they look like...
2 screws left and right of center:

M4.2 X 1.41 X 40 (it's oval head countersunk with a washer & phillips)

A #8 X 1 1/2 would probably be acceptable if you're shopping a "hardware store"!

Last edited by WVZR-1; Nov 8, 2012 at 05:23 PM.
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Old Nov 8, 2012 | 06:06 PM
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I used a 2" phillips oval with a trim washer...there is plenty of room and no worry about the screw hitting bottom. They are sometimes hard to hit the hole...hard to aim the screw I guess you;d say.

get the cordless driver with the apopropiate bit and wiggle it around to find the nut hole...then go for it!
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Old Nov 9, 2012 | 06:21 PM
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Oh....So it's a machined screw, not a self-tapping screw? I figured it would be like all the other black trim screws in the dash/bezels.
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Old Nov 9, 2012 | 06:27 PM
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Originally Posted by GREGGPENN
Oh....So it's a machined screw, not a self-tapping screw? I figured it would be like all the other black trim screws in the dash/bezels.
I gave you the "self-tapping" dimensions!
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Old Nov 10, 2012 | 12:42 AM
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Originally Posted by WVZR-1
I gave you the "self-tapping" dimensions!
My apology. Didn't know #8 wasn't machined. Thought it was. Also thought the last x 40 was the TPI.
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