Ransome YL 183 bolts

[Farmerpickle]

Good evening,

Would any of you know where I would be able to source some of these single knib bolts for the front of the board on a genuine YL 183 Kristeel mouldboard? Also what size should they be?

 

[boibach]

westlake should have those. diameter should be 7/16 and unf threads

 

[Farmerpickle]

westlake should have those. diameter should be 7/16 and unf threads

That's exactly what is currently on there, but it seems too small and I'm afraid it will pull through. I wondered if there was a bigger size bolt that is supposed to be on there.

 

[boibach]

if the bolt is original on there the head will be worn from the ploughing, also I've seen the mouldboard hole gone out of round .

 

[Tonym]

In cases like this make your own bolts to fit. Take a ordinary bolt that fits the hole and heat the head cherry red and hammer it into the hole to shape it. Tighten it up then grind off the excess. Perfect fit in your worn hole.
I used this method to make square headed bolts to fit the shares on a B12 plough I had.