Information On 1972 Rocker Panel With Tab On End

[Bill E.]

I Like To Know How The Tab Is Mounted. Do You Use A Clip To The Body Fender With A Phillips 10-24 Screw Or You Use A 10-24 Phillips Screw And 10-24 Nut Like You Use On The Rocker In Some Places. Thanks Bill

[Mike E.]

Re: Information On 1972 Rocker Panel With Tab On End

Have you checked the judging manual? Seems to me that is spelled out there. There was a change--I believe during the 71 model year.

[Don L.]

Re: Information On 1972 Rocker Panel With Tab On End

My '72 AIM calls for a "J" nut and what looks to be a trim screw (sheet metal screw w/captured washer). This would be a different screw than the other 6 machine thread screws used per side. There are no notes in the drawing's engineering history that indicates it was changed for this model year.

Hope this helps.

[Bill E.]

Re: Information On 1972 Rocker Panel With Tab On End

Hi Don Is The J Clip That Is Like A Spring Clip That You Slide On To The Lower Fender Thats Holds In Place On The Fender Then You Run The Sheet Metal Screw Up Into The Clip. Thanks Bill

[Don L.]

Re: Information On 1972 Rocker Panel With Tab On End

Yes. Screw is GM 9419322 and "J" nut is 3846854. Doubt these are still available thru GM, but your neighborhood hardware store ought to have something close.

[Bill E.]

Re: Information On 1972 Rocker Panel With Tab On End

Hi Don Thank You Very Much For The Information. Bill

[Mike E.]

Re: Information On 1972 Rocker Panel With Tab On End

Still wondering why you don't look in the JM. It says "by 1972 a hex head black oxide screw replaced the earlier design" (which, by the way, was a black oxide cross recess fillister head screw)

[Don L.]

Re: Information On 1972 Rocker Panel With Tab On End

Mike, I did look at the JM as well as the AIM. Not sure of the direction for your comment, but my advice made no connection to either a fillister head or a hex head screw. Both the the JM and the AIM call it a "screw". The JM expands to describe the type head changed from fillister to hex by 1972. A hex head may still have a cross recess, no? Mine has the cross recess fillister head. Sounds like it's wrong??? If someone has a '71 AIM, it would be useful to see what the screw's part number was then, as there is no engineering history changing the screw's part number in the '72 drawing. Again, part number in '72 AIM has it as GM 9419322.

[Chris F.]

Re: Information On 1972 Rocker Panel With Tab On End

I am interested in this too. I have a set of original rocker panels under restoration and plan to fit them back on the car.
I bought replacement screws but did not get the J nut or what appears to be a larger screw included for the front tab.
Could someone please post a photo particularly of the J nut.

[Harmon C.]

Re: Information On 1972 Rocker Panel With Tab On End

The j nut is of the wider style because it fits over fiberglass that is1/8" thick not 1/16th inch meatal. Any J nut that will fit probably will pass judging. The screw is black oxide 5/16 hex with a resesed head and no provision to use any type screw driver. I doubt the hardware sells this screw but I have seen a similar type screw used under the dash on the duct work. The screw under the dash is not judged so maybe you could put the hardware store screw under the dash and the real deal on the rocker molding. The screw is about 5/8" in length.

[Chris F.]

Re: Information On 1972 Rocker Panel With Tab On End

Thank you for the information down under in Tasmania there isn't another Corvette like mine to compare to so these little things are hard to picture what they should look like.

[Bill E.]

Re: Information On 1972 Rocker Panel With Tab On End

Hi Lyle The Hex Bolt Is It 5/16-18x5/8 Thanks Bill

[Kurt G.]

Re: Information On 1972 Rocker Panel With Tab On End

Bill. If you're talking about the screw on the bottom of the rocker panel just aft of the front wheel well, it's a #10 X 1/2 inch, hex head sheet metal screw using a J-nut to hold it in place on the glass. It's a judged item, but not sure what the deduct is for non-original part. The originals are black oxide, but a little flat black paint will help hide the galvanized replacement

[Harmon C.]

Re: Information On 1972 Rocker Panel With Tab On End

If a judge finds the wrong screw he will take a point or maybe one on each side. The screw is addresed in the manual so I doubt you see any free rides.

[Jim T.]

Re: Information On 1972 Rocker Panel With Tab On End

If you have replaced the original rocker panels with the later GM rocker panels without the tab, would continued use of the correct screw and j-nut reduce the point loss for not having the original rocker panels with the tab?