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Old 05-20-2020, 07:06 PM   #1
roll_the_dice
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Quick Question...Heater Box Screws

I am starting to install my Vintage air system. I got a cowl heater block off plate. I thought I would receive new screws, but it uses the OEM screws. I sold my heater box/core and screws. What size do I need? I know there are 5...Thanks for any help.
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Last edited by roll_the_dice; 05-20-2020 at 08:25 PM.
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Old 05-20-2020, 08:46 PM   #2
The Rocknrod
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Re: Quick Question...Heater Box

Dont know, I think 1/4"-20. But here is a great thread on the subject:
http://67-72chevytrucks.com/vboard/s...d.php?t=488618
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Old 05-20-2020, 09:03 PM   #3
roll_the_dice
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Re: Quick Question...Heater Box

Thanks, I was thinking 1/4x20 might be it...I think I have some laying around. I will try one tomorrow...but I am perusing the link you posted (thanks) and saw this drawing...but it just says existing screws...not the actual size.
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Old 05-20-2020, 09:53 PM   #4
Captainfab
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Re: Quick Question...Heater Box

The originals are #14 x 3/4" hex washer head sheetmetal screws. That is what I supply with my heater block off plates.
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Old 05-21-2020, 07:39 AM   #5
The Rocknrod
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Re: Quick Question...Heater Box

Something like this? https://www.homedepot.com/p/Hillman-...3259/202242949
Sheetmetal would make sense.
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Old 05-21-2020, 08:47 AM   #6
roll_the_dice
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Re: Quick Question...Heater Box

Thanks guys...I knew someone would have the answer. I couldn't find it and I searched and googled for at least an hour!
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