Front Bumper Cover Nut Size
07-05-2014, 06:50 PM
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Car: 1988 GTA
Front Bumper Cover Nut Size
Ok, once again I searched and couldn't find anything. I'm looking for the thread size of the nut that attaches the front bumper through the fender. I'm not near the car so unfortunately I can't look at it, but I seem to recall there just being a stud towards the top of the bumper cover. I hope I'm remembering correctly. It's for a Firebird.
07-06-2014, 12:35 AM
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07-06-2014, 09:54 PM
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Car: 1988 GTA
Re: Front Bumper Cover Nut Size
So it definitely wasn't M6. Might not even really be threaded? Either that or my stud is in really bad shape. Here is a pic of what I'm asking about. Sorry about the bad picture: 
07-07-2014, 09:03 AM
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Car: 1985 Trans Am T-Top
Engine: 305 TPI
Transmission: T-5 5 Speed
Axle/Gears: 3.42 posi 1LE 10 bolt
Re: Front Bumper Cover Nut Size
It is a threaded stud, I don't know if I've ever seen what the factory originally had there, no car I've worked on had the original hardware there. The original fitting was probably some sort of speed nut or push retainer. I'll go measure the support bar I have and see what size it is.
07-10-2014, 05:35 PM
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Car: 1985 Trans Am T-Top
Engine: 305 TPI
Transmission: T-5 5 Speed
Axle/Gears: 3.42 posi 1LE 10 bolt
Re: Front Bumper Cover Nut Size
Checked it out, not really threaded, but I think it is a push type retainer. This is an 89 formula. It us about m6 size so you. Ight be able to crank a nut on it.
Here's a pic.
I think this is what fits it:
http://www.clipsandfasteners.com/M6_...c_p/a14980.htm
Here's a pic.
I think this is what fits it:
http://www.clipsandfasteners.com/M6_...c_p/a14980.htm
11-10-2016, 04:15 PM
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Car: 87 Trans Am
Engine: 355 Carb. Nitrous 100 shot
Transmission: TCI Performance Trans. 350 Turbo
Axle/Gears: Borg & Warner 9 bolt 3.70 gears
Re: Front Bumper Cover Nut Size
Did anyone ever figure out what size the self threading nuts are? I picked up some M6 and they are definitely to small.
11-10-2016, 04:49 PM
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Car: 87 firebird
Engine: 2.8 MFI
Transmission: T-5
Axle/Gears: 3.42
Re: Front Bumper Cover Nut Size
Its an automotive speed nut.
I have no idea what size it is. I just bought a package of assorted sizes from the local car parts store and some of them fitted. they cut their own thread
I have no idea what size it is. I just bought a package of assorted sizes from the local car parts store and some of them fitted. they cut their own thread
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