Bolt size for Swinging Drawbar mounts for 801 series

aleiweke · Jan 14, 2013

I am at work and I wanted to pickup some bolts to mount the new to me swinging drawbar mounts onto my 1961 Ford 841 Tractor. Anyone know what size the bolts are and how long they might be? The Tractor is 30 min from the closest store so I figured I would try you guys first before I run out there and measure then go to the store.

Dean · Jan 14, 2013

Cannot give bolt dimensions from memory but will offer some words of advice.

Thoroughly clean the bolt holes in the casting of any debris and be CERTAIN that the bolts used are not too long. If they bottom you will likely break through the thin shell inside exposing the sump, resulting in potential leaks.

Dean

WayneIA · Jan 14, 2013

According to NH on line parts book, you have two choices. 3/4-11-1.38 or 3/4-11-1.75. If your using an after market bracket , 1.38 is probably right, oh, pluse lock washers.

aleiweke · Jan 14, 2013

Thanks I'll pick up some 3/4-11-1.38 on the way home tonight. Any idea on Grade? 5 or 8?

I think the mounts are OEM, I bought a used one off eBay for $5 bucks to replace the missing one. Had to pay $12.50 to ship it but that's OK with me I get that its heavy.

Dean · Jan 14, 2013

Gr 5 is more than adequate.

Dean

hurleyjd · Jan 14, 2013

You need 5/8x11x1.38. And not the 3/4 as recommended. Also I would use grade 8 as the bolts will be in shear and grade 8 shear value is higher than grade 5.

Bolt size for Swinging Drawbar mounts for 801 series

aleiweke

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aleiweke

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