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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

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Old Sep 2, 2019 | 06:38 PM
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From: COSMOS
Bolt sizes

I need a bolt 31528-S. How do I find the size and thread info?
 
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Old Sep 2, 2019 | 08:38 PM
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44 Views

Not one reply..........
 
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Old Sep 2, 2019 | 08:54 PM
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Originally Posted by RTT
I need a bolt 31528-S How do I find the size and thread info?
Originally Posted by RTT
44 Views Not one reply..........
Where did you find this 'hardware' part number? You cannot look up hardware parts by application in the parts catalog...unless you know where the parts were used.

You cannot expect people to respond to this impossible question within two hours, especially on a 3 day weekend. Today is Labor Day.
 
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Old Sep 2, 2019 | 09:03 PM
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THANK-U SO VERY MUCH. YOU ARE REVERED HERE AND RIGHTFULLY SO!!!!! i GOT THIS FROM FORD TRUCK MASTER PARTS CATALOG ........
 
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Old Sep 2, 2019 | 09:06 PM
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From: COSMOS
SECTION 35 PAGE 8, ILLUSTRATION BOOK
 
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Old Sep 2, 2019 | 09:11 PM
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ON SAME PAGE I GOOGLED 20346-S AND FOUND HEX HEAD BOLT 5/16-18X3/4" . I NEED 2 OF 31528-S FOR COLUMN BRACKET IN CAB THAT I BELIEVE ATTACHES TO BOTTOM TWO HOLES OF UNDER-HOOD BRACKET THAT HOLD REVERSE SWITCH VIA A CLAMP!
 
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Old Sep 2, 2019 | 09:44 PM
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I just realized that is not a full Ford P/N...Oh well I am learning. that's why I am here!!!!!! I know enough to get me in trouble.........ha
 
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Old Sep 2, 2019 | 10:01 PM
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Originally Posted by RTT
ON SAME PAGE I GOOGLED 20346-S AND FOUND HEX HEAD BOLT 5/16-18X3/4" . I NEED 2 OF 31528-S FOR COLUMN BRACKET IN CAB THAT I BELIEVE ATTACHES TO BOTTOM TO HOLES OF UNDER-HOOD BRACKET THAT HOLD REVERSE SWITCH VIA A CLAMP!
You have to look up standard parts with the parts they were used with, in this case 3B633 & 3513. I also looked under 3668 but there's no listing.

So I looked in the 1948/56, 1957/63 and 1973/79 truck parts catalogs, 1949/59, 1960/64, 1965/72 and 1973/79 Ford car parts catalogs...no listing there either.

So, the only thing one can do is look up the bolt in a Standard Parts (hardware) Catalog. I have one, but it's dated 2/2000. This bolt was obsoleted by this time, so there no listing for it.

Sorry.

Pic: 31528-S

 
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Old Sep 3, 2019 | 03:47 AM
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Go to Boltdepot.com, they may have it. Or get one from a hardware store and cut it down to the length you need.
 
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Old Sep 3, 2019 | 08:45 AM
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You can buy one of these:
Bolt gauge

And one of these:
Thread gauge

You will be able to determine any bolts size and thread!

 
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Old Sep 3, 2019 | 01:06 PM
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~~~Thank-you all~~~ I am embarrassed to say I probably have bolt but can not find it or hole is so rusted I am having trouble getting it back in!!! I need to label my parts and sort them in smaller groups!!!
Thank-U GaryKip I will try the site u suggested~~~
 
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Old Sep 3, 2019 | 01:20 PM
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*** Just 2 clarify*** Bracket 3668 in illustration is not like the one I have. Mine is 5 hole. The one shown maybe for power steering model??? I have I think 5 bolts 20346-S. I have known I need a screw gauge but spent money in other places.
Thanks-everyone again.
I need Garage Squad.......lol.......
 
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Old Sep 5, 2019 | 04:22 AM
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Everyone had to start somewhere. You'll get the hang of it too.
 
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Old Sep 5, 2019 | 11:29 AM
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Originally Posted by RTT
*** Just 2 clarify*** Bracket 3668 in illustration is not like the one I have. Mine is 5 hole. The one shown maybe for power steering model???

I have I think 5 bolts 20346-S8. I have known I need a screw gauge but spent money in other places.
Parts catalog pics can be representations. Since the pic covers 1965/72 F100/250 2WD & 1967/72 F350, there will be differences in some of the parts.

20346-S8 is a national course thread grade 2 .. 5/16" -18 x 3/4" bolt. Parts catalogs pics of hardware parts may not show the complete suffix.
 
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Old Jan 8, 2020 | 07:56 AM
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Exclamation Know how

Mr. Num Dummy, Will u share how you found the missing 8 suffix number?
Also , I apologize for my spuratic activity here on FTE. I suffer from self diagnosed- ADD, Hypochondria among my other aliments...etc...etc, and Lingering late 70's fog .....
 
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