L Series - Folding ROPS Bolt Diameter?

[stonypass]

The original owner of my L4200 had cut the ROPS to fit a low shed.
I'm in the process of copying Kubota's folding design, but need to know the diameter of the two big bolts they use on an L Series tractor to hinge and fasten it into place.

Thanks to anyone who can help!

 

[carlav1410]

I think there same as my L2500dt and there 16mm x1.50 thread.

Hope this helps

BE SAFE Carl

 

[crazyal]

I would use a 5/8" grade 8 bolt. I would go with a coarse thread because it will make removing the bolts much quicker when you need to fold it.

 

[stonypass]

Thanks for the info, I was thinking of using a 5/8 Grade 5 or 8 bolt.
16mm is .629 and 5/8 is .625 so that size should be good.

I will be using 1/4" steel to build the U that's welded to the lower section, as that's what I measured on the dealers L4600, and I'll have a pro do all the welding.

Also trying to decide if during a rollover the locking pin carries all the load, or if the hinge bolt would carry some as well. A Cat 0 to Cat 1 bushing would work well for the hinge tube at 5/8 ID, but is slightly smaller on OD at 7/8 than what I see on the dealers L4600 at 1".

Also found the part number for the plastic ROPS end caps on Messicks, site and my local dealer has ordered them too. I love that its a Kubota and I can get most any part easily.