Which screw is correct???

[Donald H.]

This is for the arm rest screws on my 66. I have my door panels off to replace the lock set and am replacing/repairing other bubba items I have found in the doors and related parts.

I found two different screws and one missing that go under the arm rest and screw into the door. So I'm trying to order a more correct set of screws and am confused.

Paragon and CC sell a set of pan head machine type screws. See first picture below. And LIC sells a set that are pan head sheet metal screws.. Completely difference thread types, so I can't believe both would be correct.

[Jerry L.]

Re: Which screw is correct???

Just pulled an original one from my 66 roadster. Your second photo appears to be the correct screw and washer. The screw is just under 2-1/8" long from the tip of the screw to the bottom of the screw head. The originals are cad or zinc plated, not chrome.

Jerry Larsen

[Donald H.]

Re: Which screw is correct???

Just pulled an original one from my 66 roadster. Your second photo appears to be the correct screw and washer. The screw is just under 2-1/8" long from the tip of the screw to the bottom of the screw head. The originals are cad or zinc plated, not chrome.

Jerry Larsen

Thanks for the quick response. I'll get a order placed today now. As always, this started out a fairly simple project to replace my lock set. Once I took the door panels off it revealed a lot of bubba work. So I had to order replacement springs for the missing ones on the inside door latch, missing or incorrect screws, on and on and on........ It never ceases to amaze me what lengths some bubba repairs go to cludge something together rather than order a $1.50 spring or correct screws.

Don

[Alan D.]

Re: Which screw is correct???

Well that answer surprised me since mine are like the first picture, however that's for a 64 which LI lists as different than the 65-67. the part number for a 63/64 is 153830 so double check your AIM (mine was in Sec 1 sheet 14.00)

Now the door panel made a radical change for 65 so if GM starting using a door panel type screw I would not be surprised however worth a check. And you thought it was simple!

[Donald H.]

Re: Which screw is correct???

I did check the AIM, but the doings in the 66 AIM are very small and the only description for the part is screw.

[Brian K.]

Re: Which screw is correct???

AHHHHH, I just went thru this. All I can say is my car has the machine thread screws and so did my buddies 66 vert. I noticed this when I was doing some work on his and I had just got my order from Long Island, I noticed the difference in the screws ran over and checked mine the same machine thread. So I order a set from either Paragon or Corvette Central (can't remember which) and they were machine thread. I don't know which is correct but the LIC ones would not thread in and the machine ones went in like a knife in butter.

[George C.]

Re: Which screw is correct???

Donald,
FWIW, I went through a similar thing with my 65. When I got it there were no screws in the arm rests at all. i ordered them from one of the suppliers and received the sheet metal screws, which did not fit.
Looking at the doors, it was obvious the pan head was the correct screw, I ordered them from another supplier and installed them.
While you have the panels off it should be easy to see if there are inserts in the door to accept the bolts, or just a hole to take the sheet metal screw.
If I remember correctly, they are a 1/4 - 20 thread.
Good luck,
George

[Jim D.]

Re: Which screw is correct???

If I remember correctly, they are a 1/4 - 20 thread.
George

Yup, same as my 65.

[John H.]

Re: Which screw is correct???

'63-'64 used screw #153830, and '65-'67 used screw #9420791 with special washer #126392. Although the riveted-on anchor plate in the door was different in '65-'67 vs. '63-'64, in both instances the plate was a "plate asm", which indicates it had weld nuts on it. Weld nuts are only used with machine-thread screws; sheet metal screws are only used with pierced or extruded holes.

1/4"-20 machine screws are correct - sheet metal screws are not.

[Jerry L.]

Re: Which screw is correct???

WOW! Never expected this kind of various responses as it is very obvious to me, based on my original 66 roadster, that the 4 screws, in mine, are not a thread type screw and there is not any kind of bolt in the attachment area that a threaded screw could attach to. In fact there is not any threaded screw that holds the panel to my doors. I've had this car since 1970 and replaced the original door pannels in 78 using the original driver screws. Go figure!! Any chance the location that the car was build could make a difference. Having said that I would suggest that the poster check to see if there is a threaded attachment under the arm rest where the screws/bolts attach to the door or if it is just punched. If it is threaded he would still have to have a washer to prevent punching through the door panel, in my mind. No NCRS Judge but, I know what my 66 looked like from the factory.

[John L.]

Re: Which screw is correct???

FWIW
my '65 AOS car uses two machine screws w a washer below the arm rest. In my opinion, there is too much force for a sheet metal screws.