The ductwork in my 63 A/C is held up with several of the screws in the picture. Does the screw look familiar to 63 A/C owners or any C2 A/C owners? The screw is 7/8 inches long (total length).
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Re: 63 A/C duct screws
Hi Harry,
The two places I have seen these screws used are holding the FI "S" tube to the core support and also used to secure some of the AC/Heater cables to the inside heater box.
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Re: 63 A/C duct screws
Harry, I have been told that Corvairs use these screw in the engine compartment. I believe
they are used to hold metal shielding to the engine.
Dave Gray
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Re: 63 A/C duct screws
Harry, they are holding up the A/C duct on my '66. I have heard that these screws are refered as "high hat" screws.Comment
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Re: 63 A/C duct screws
Gary and David, these are rather small screws. Does anyone have the measurements on the screw size for the FI S tube?
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Re: 63 A/C duct screws
I have also seen those "Hi-Ha"t screws on 63-67 AC ducts and late 64-65 FI S-tubes. Several headmarkings. Single Anchor large font, Single anchor Small font, Double anchor, A in circles, Blank and dimple. Used on may GM cars of the 60's. Usually they have a notch in the pointed tip.Comment
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