Farmall C implement bolt size and pitch?

48C-MAN · Jul 18, 2014

Looking for the size and pitch of the small side implement bolts on a Farmall C? The ones in the casted square on both sides.

DeltaRed · Jul 18, 2014

If you're gonna play with 'old' tractors,that is a skill you need to learn.To be able to identify/figure out bolt size on your own.There are only 2 pitches in those bolts.Fine and coarse.VERY easy to distinguish.No metrics on old american tractors.Use a ruler/tape measure to determine the hole/bolt size.Grab a bolt or two and test itr to make sure,measure the bolt if you need to.With a bit of practice you will be able to just look at it and imediately know size/thread.Yes,I know what size ytou need. But for the sake of your furthering 'education',I will let you figure it on your own.For if I tell you,you wont learn a thing about about working on your SuperC or old tractors.That is a basic skill.If you still have trouble figureing it out(it's not hard),post back.Sorry for seeming to be an 'A...hole',but Just trying to help you become more educated/proficient/confident in old tractors.

48C-MAN · Jul 18, 2014

When I am at work an hour away from where my tractor is parked at home just looking for a quick trip saver, now that being said just looking for the size and pitch.

Janicholson · Jul 18, 2014

I see your need (likely 5/8 course, or 1/2" course). Take some of each. Jim

48C-MAN · Jul 18, 2014

Thanks for the help, I will

DeltaRed · Jul 18, 2014

If you had said you were a ways away from the tractor,That would have been different.I would have told you.By the wording,it conveyed(to me) you were too'lazy' to find out on your own.Sorry to have offended you as that was not my intention.I'm all for helping people.But I'm also a big advocate in teaching people new/more skills and to become more self suficent.BTW,The bolt in question is a 3/4 coarse thread.About 2inches long.

mkirsch · Jul 18, 2014

Yes, the bolts are 3/4" coarse thread (aka NC, which does *NOT* stand for North Carolina, BTW).

5/8" NC are for Farmall Cubs.

BMD · Jul 18, 2014

The bolts are 5/8 diameter and have a thread length of 1 1/4 inch. The thread pitch is NC (course).

For reference the part number is PO25842A. They have a tapered seat to help prevent backing out. If you search eBay for "farmall fertilizer implement mounting bolt" you will find both new and used bolts.
When looking at the implement mounting bolts you sometime see shorter tapered seat bolts sold as implement mounting bolts, they are actually drawbar mounting bolts with are slightly shorter in length.

hope this helps
Bob

gab · Jul 18, 2014

The 2 bolts on the square pad on the bell housing on mine are 5/8 x 1 1/2" coarse but not tapered, it's got my #72 frt blade on it now and don't think the brkts. are for a tapered bolt. The pads on the side of the bolster are tapered 3/4 x 2" and used for a planter or cultivator

Farmall C implement bolt size and pitch?

48C-MAN

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DeltaRed

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48C-MAN

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Janicholson

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48C-MAN

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DeltaRed

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mkirsch

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BMD

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gab

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