defrost vent thread size

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Mar 17, 2025 | 03:09 PM

jniolon

Thread Starter

old and in the way

Joined: Jul 1997

Posts: 5,923

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From: Lovely Hueytown Alabama

defrost vent thread size

Tracking down some electrical gremlins today and had the dash panel out, the the a/c vents removed and found my drivers side defrost vent laying on top of everything ... will reinstall tomorrow but the nuts for the studs are long gone... I've tried 10-32, 10-24, 12-24, and 8/32 ... #12 just slides down the stud... what size nuts hold that defrost funnel up under the dash ??? I even tried #5 metric... nothing fits

little help ?????

john

Mar 18, 2025 | 06:08 AM

oscar1955

Mountain Pass

Joined: Oct 2013

Posts: 104

Likes: 77

From: Chanhassen, Minnesota

10-32 thread size is what the studs on my 55 are. I was installing the ducts after paint and chased the threads with a die.

Mar 18, 2025 | 06:50 AM

jniolon

Thread Starter

old and in the way

Joined: Jul 1997

Posts: 5,923

Likes: 1,052

From: Lovely Hueytown Alabama

hmmm...guess mine are just buggered up...I'll chase them....thanks

Mar 18, 2025 | 07:15 AM

tsd49

5th Wheeling

Joined: Oct 2024

Posts: 42

Likes: 20

Always good to have a thread gauge on hand as well ....CJ Pony

Tony

Mar 18, 2025 | 09:10 AM

Old F1

Cargo Master

Joined: Feb 2008

Posts: 2,795

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From: Windermere Valley,B.C. Ca

Quote:

Originally Posted by tsd49

Always good to have a thread gauge on hand as well ....CJ Pony Tony

Only if your not really old, wear bifocals. under the dash, in the dark !

Mar 18, 2025 | 10:42 AM

56panelford

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Joined: Oct 2005

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From: northwestern Ontario

Quote:

Originally Posted by Old F1

Only if your not really old, wear bifocals. under the dash, in the dark !

Except that nut goes on top of the dash..

Mar 18, 2025 | 06:32 PM

bobbytnm

Roast em' if you got 'em

Joined: Mar 2005

Posts: 22,010

Likes: 9,948

From: Rio Rancho, NM

John,
Maybe its not supposed to be a real nut. Could it be one of these?
Thread Cutting Pal Nut With Sealer, 1/8 Stud Size, Hex Washer Head, Zinc Plated

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Mar 18, 2025 | 06:58 PM

56panelford

FTE Legend

Joined: Oct 2005

Posts: 283,822

Likes: 8,328

From: northwestern Ontario

Never seen a lock washer on any I've had and they aren't a usual piece that gets removed for any reason..

Mar 19, 2025 | 06:03 PM

#10

bigwin56f100

Lead Driver

Joined: Jul 2003

Posts: 9,371

Likes: 1,731

From: AKRON ohio

Quote:

Originally Posted by 56panelford

Never seen a lock washer on any I've had and they aren't a usual piece that gets removed for any reason..

always have the star washer integrated to the nut

Mar 19, 2025 | 06:05 PM

#11

56panelford

FTE Legend

Joined: Oct 2005

Posts: 283,822

Likes: 8,328

From: northwestern Ontario

Not on any I have Kevin..or the ones I have on the ones off this Mercury. Could have those on the pickup and panel but not curious enough to go check...lol