Was it ever a stock part?

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Steve Jelf
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Was it ever a stock part?

Post by Steve Jelf » Thu Mar 07, 2019 1:31 pm

Yes, I know it's supposed to be a regular round head machine screw. But this is the second steering gear case I've found with a headless set screw. That makes me wonder if they tried these for awhile.

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Re: Was it ever a stock part?

Post by George N Lake Ozark » Thu Mar 07, 2019 2:00 pm

I've got one of those I haven't removed yet . Need a spare ??

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Re: Was it ever a stock part?

Post by TFan » Thu Mar 07, 2019 2:24 pm

Steve, That is what my 26 had in it when I tore into the column several years ago it appeared stock so I replaced with same. Jim
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Re: Was it ever a stock part?

Post by Scott_Conger » Thu Mar 07, 2019 6:07 pm

Prior to about 1970 or so, any machinist worth his salt would know that a slotted headless screw would typically be used where neither part has a through hole such as in this situation, pulley securing, etc.. In the face of no documentary evidence, ever, (to my knowledge) of this being on a Ford drawing, I would suggest that (in my opinion) it is an early non-Ford replacement for the frequently missing screw.

I have seen slotted, headless screws in gearboxes, too, and in every instance, the slot was very wide, like made by hand with a saw (something like in the photo above), and never looked like a properly fabricated part .
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Re: Was it ever a stock part?

Post by Allan » Thu Mar 07, 2019 6:13 pm

FWIW, that screw has much coarser thread than the usual item. I would hazzard a guess that it is indeed a later replacement, perhaps even oversized to make up for stripped threads in the housing.

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Re: Was it ever a stock part?

Post by DanTreace » Thu Mar 07, 2019 8:36 pm

Agreed. Ford part # 3505 is a roundhead machine screw. Anything else is a spurious part!
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Re: Was it ever a stock part?

Post by Original Smith » Thu Mar 07, 2019 9:20 pm

That little screw is easy to come by, but if you compare it to an original, you will see the diameter of the head on a new screw is larger than the originals. I always turn down that diameter to that of an original. Not only that, it looks better.

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Re: Was it ever a stock part?

Post by Steve Jelf » Thu Mar 07, 2019 9:54 pm

I always turn down that diameter to that of an original.


To what size?


The little set screw is 6-32, not oversized. I was lucky to get it out before one of the "teeth" broke off. I've replaced it with a round head 6-32.
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Re: Was it ever a stock part?

Post by TFan » Fri Mar 08, 2019 12:11 am

Would they have been raven or nickel depending on what year you have? Jim
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Re: Was it ever a stock part?

Post by Rich Bingham » Fri Mar 08, 2019 8:08 am

Dan, what publication did that puzzle appear in, and when ? It would be a treat to see more ! (Maybe some of us could earn that $1.00 prize ! :D )
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Re: Was it ever a stock part?

Post by Original Smith » Fri Mar 08, 2019 10:25 am

Steve:
I've never measured the head diameter. I just put the new screw in the chuck in my drill press and file it until it looks the same as a stock one. For those with nickel steering covers, I use a stainless screw, which matches perfectly. Ford never did raven finish those screws to my knowledge.

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