1st Generation 1964 1/2 - 1973 - Questions & general discussions that apply to a specific year > 1966 Mustang

1966 spinner hubcap screw size

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Hipo giddyup:
I‘ve looked through Jim’s hardware spreadsheets but cannot find the screw size or replacement for the screws used to hold the die cast spinner center on the 66’ style hubcaps. Any help would be gladly appreciated.

Bossbill:
I have a set of these hubcaps laying about.

5/16 hex head with straight slot
Head surface is recessed (slight lip around outside edge)
Built in star washer
Total length .6165
Thread length .445
Self tap with slot
10-24 thread
Looks like zinc coating

Here is a pic:
https://photos.app.goo.gl/rRA5fUITYF8cdfss1

jwc66k:
The best reason I can come up with about not knowing about the spinner screw is that Ford supplied the wheel cover and spinner complete and did not service them separately. This "quirk" is shown in other items with the notation "includes attaching hardware". The only hardware mentioned in the 75 MPC is for Shelbys.
If someone with original wheel covers with spinners for a 66 could remove one and measure it, that would be a help. This would only apply to 66 as I would suspect that suppliers used their own type of hardware.
(In the interim, I would recommend you getting a set of 66 Style Steel Wheels (include one for the spare) for your car. They look better anyway.  ;) And they do include the small center cap and attaching hardware. )
Jim

jwc66k:

--- Quote from: Bossbill on November 19, 2017, 12:52:39 PM ---I have a set of these laying about.

5/16 hex head with straight slot
Head surface is recessed (slight lip around outside edge)
Built in star washer
Total length .6165
Thread length .445
Self tap with slot
10-24 thread
Looks like zinc coating

--- End quote ---
That's the type of description that is constructive. Good write-up (I wish others would follow). Unfortunately, I couldn't find a corresponding screw in available documentation (AMK or Osborn publications) to get a Ford part number.
Jim

Bossbill:
I was using your format (off the top of my head) from your excellent Excel spreadsheets!

I had my laptop in the shop hooked to an HD TV and was showing a buddy a side by side of your spreadsheet, the description of each fastener, and a blowup of a section of the Mustang Part and Body Illustrations (digital edition) and he just looked at me with a puzzled expression and exclaimed "I've seen you geek out before, but this is just crazy good."
Having this level of detail in the shop on a big screen at 1080 is just an amazing resource. Especially if you are tired of reading small print in books.

Thanks for your spreadsheet and all the work that went into it.

By the way, I was using a digital caliper and got carried away with number of decimals. I can't REALLY measure to the 10 thousandths.

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