Does anyone know what size threads the machine screw for the door striker plate is?
I tried to tighten the two on my front door and they just turned.
I pulled back the upholstery to find that one of the nuts is missing and the other was at the bottom near the gas tank.
I am trying to find a nut that will fit, but after searching everywhere I can't locate one.
Does anyone have a proper nut I can purchase?
The screws are in fine condition.
Did Ford have lock nuts on these from the factory? There is no indication that there were any on my T.

Thanks,

Steve Boothroyd

I should clarify my first post.
The machine screws are for the striker plate on the body, NOT the door.
Thanks again.

Steve Boothroyd

I think they are a #12 fine thread.

Steve,

Because your address is Canada -- please confirm you are wanting parts for a USA produced Model T (like the 1922 touring in your profile) and NOT a Canadian produced Model T.

From Bruce McCalley's "Price List of Parts" CD [available by its self on as part of the "Comprehensive Model T Encyclopedia" both available at: http://mtfca.com/encyclo/mccalley.htm ] he has the following listed under the touring and roadster section:



Note it is for the 1915-1917 cars – but the later ones would probably be similar.

I though McCaster Carr http://www.mcmaster.com/#machine-screws/=1emyw6 would have them but I may have looked in the wrong section. I don’t have time but you might check http://www.restorationstuff.com/Catalog/catalog.html they also have some items. And of course the actual thread size does not show once it is installed – so the local hardware should be able to provide a close match that would look like the correct slotted head, be the correct length and work. Just purchase the bolts and nuts at the same time and it doesn’t matter what thread they are. The price list of parts calls them a bolt – but for a USA car they would have been a slotted screw and for a Canadian car they would have been a Robertson screw.

Respectfully submitted,

Hap Tucker 1915 Model T Ford touring cut off and made into a pickup truck and 1907 Model S Runabout. Sumter SC.

Thanks for the information Hap.
Yes this is for my 1922 U.S. Touring.

Regards,

Steve

I wasn't able to locate a 7/16 20 tpi nut, but I did find some Stainless Steel #12 sloted head machine screws with nuts that fit fine.
Thanks.

Steve

Steve,

I'm glad you found a solution. I don't think locking nuts were used on the Fords. They had the castle nuts with cotter pins or safety wire but I don’t think they used a locking nut. And I remember seeing some lock washers on the windshield hinges on our touring. But I don’t know if lock washers were used a lot on the Ford bodies in the teens and twenties. I would guess -- and it is only a guess -- that the flowed on paint jobs tended to serve as a good "locktight" for the nuts and bolts in the bodies. But that is just a GUESS.
Perhaps someone else can provide additional information on that one way or the other. .

By the way -- please take a look at your right front floorboard riser. There may still be an outside body maker's serial number stamped there (either in the wood or if the floorboard riser is metal – stamped into the metal). Sometime in the 1920s the body numbers on the tourings and roadsters stopped being stamped into the right front floorboard riser. I'm not sure when that was and of course there was probably some overlap when some were still stamped while others were not.

Again, glad you found a screw and nut that will work well for you.

Respectfully submitted,

Hap Tucker 1915 Model T Ford touring cut off and made into a pickup truck and 1907 Model S Runabout. Sumter SC.

7/32-20 is a #12-20.

While you have got it apart, braze 2 nuts on a small plate and attach the plate to the door post with a small screw. Now when you have it all buttoned up you can tighten the striker easily or remove it without the nuts falling down behind the upholstery.