The Ford Barn

daoust · 06-30-2014, 08:07 PM

I was at the Eastern National Meet last week in Gettysburg, PA. In one of the 47 Fords I noticed a special nut that was used on the bracket that holds the spare tire in place in the trunk. Apparently it is some type of locking lug nut with a thick square washer. Does anyone know exactly what this nut is called and where they can be found? Any help appreciated. I'd like to find one for my car. A picture is attached.

Thank you.

David Daoust

ford38v8 · 06-30-2014, 08:35 PM

David, the nut you pictured is part of an assembly that included a keyed lock that clamped over the nut. Ford part # 48-18312-B was introduced in 1935 for the 1936 model Ford, and continued as standard equipment on open cars having spare tires outside the trunk, such as my own '38 Convertible Coupe. My spare tire is behind the driver seat, accessible to thieves, therefore the need for the lock.

Terry,OH · 07-01-2014, 06:10 AM

David: There are several versions of the lock nut. For the application you have pictured the nut does not appear to be correct since it has a wheel nut chamfer on the side for the flat washer. It would appear, the nut pictured, is supposed to fit in place of one of the wheel lug nuts.

daoust · 07-01-2014, 06:29 AM

I think the correct part number may be 78-1462-A or 77-1462-A. Not sure if the square washer shown in the picture is correct and if so, what the part number is for that. Sooner or later I'll find it. I love the hunt.

Kurt in NJ · 07-01-2014, 07:06 AM

The square washer looks similar to one used with the generator nut ---on my 46 it came with the nut and lock, it was keyed the same as the trunk lock, there was no washer

The 36 conv sedan has a different "nut", the head looks like the nut in the picture, but it has a stud ---about 3/8 that screws into the trunk floor

I have found the nuts in junk boxes at flea markets like Hershey for 1$, there are several versions, and some other make cars used similar parts

JM 35 Sedan · 07-01-2014, 07:40 AM

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I have one version of the locking lug nut as Alen described in his post. It has the lug nut locked in place and, of course, the key is missing. If I can put my hands on it today, I will take some pictures to post here.
These locks should also be shown in some of the V-8 Clubs restoration books.

nospartsman · 07-01-2014, 08:42 PM

Is this what you are referring to?

06-30-2014, 08:35 PM	#2
ford38v8 Senior Member Join Date: Jul 2011 Location: SF Bay Area Posts: 7,285	Re: Locking lug nut David, the nut you pictured is part of an assembly that included a keyed lock that clamped over the nut. Ford part # 48-18312-B was introduced in 1935 for the 1936 model Ford, and continued as standard equipment on open cars having spare tires outside the trunk, such as my own '38 Convertible Coupe. My spare tire is behind the driver seat, accessible to thieves, therefore the need for the lock. __________________ Alan

07-01-2014, 06:10 AM	#3
Terry,OH Senior Member Join Date: May 2010 Posts: 5,187	Re: Locking lug nut David: There are several versions of the lock nut. For the application you have pictured the nut does not appear to be correct since it has a wheel nut chamfer on the side for the flat washer. It would appear, the nut pictured, is supposed to fit in place of one of the wheel lug nuts.

07-01-2014, 06:29 AM	#4
daoust Member Join Date: Nov 2011 Location: Stratham, NH Posts: 66	Re: Locking lug nut I think the correct part number may be 78-1462-A or 77-1462-A. Not sure if the square washer shown in the picture is correct and if so, what the part number is for that. Sooner or later I'll find it. I love the hunt.

07-01-2014, 07:06 AM	#5
Kurt in NJ Senior Member Join Date: May 2010 Location: on the Littlefield Posts: 6,555	Re: Locking lug nut The square washer looks similar to one used with the generator nut ---on my 46 it came with the nut and lock, it was keyed the same as the trunk lock, there was no washer The 36 conv sedan has a different "nut", the head looks like the nut in the picture, but it has a stud ---about 3/8 that screws into the trunk floor I have found the nuts in junk boxes at flea markets like Hershey for 1$, there are several versions, and some other make cars used similar parts