Bolt with "10" on the head

[ovrszd]

Good stuff everyone, thanks for the education.

Now what do you propose to the OP???

 

[bcp]

Some information here. Maybe more on their site.

Metric JIS hex bolts, Zinc plated class 8.8 steel - Bolt Depot

Bruce

 

[Agvg]

Most logical is to order bolts from a dealer, then you know you have the right part.

 

[Stimw]

For the OP, find another dealer and get the right bolts.
There are so many dealers that sell and ship parts.
Putting a generic bolt in could damage other EXPENSIVE parts!

 

[POC]

Pretty sure this is my answer.

Thanks everyone.

 

[sixdogs]

My Deere dealer has bulk binds of metric grade 10 and, based on the high price, are extra hardened bolts. The prior post looks correct and I can't see a reason to buy the bolt from a dealer for many multiples of the bulk bin price.

The real question is; how did they break? That would be a concern.

 

[MHarryE]

Are the bolts for a nut and bolt type connection or into tapped holes? If into tapped holes, you may need to pay attention to thread pitch. Japan switched from JIS to ISO sizes in 1967 but you can still find JIS around - and up to size M12 the thread pitch varies from ISO standard.

 

[POC]

Re: Bolt with "10" on the head

My Deere dealer has bulk binds of metric grade 10 and, based on the high price, are extra hardened bolts. The prior post looks correct and I can't see a reason to buy the bolt from a dealer for many multiples of the bulk bin price.

The real question is; how did they break? That would be a concern.

They are into tapped holes.
I guess some worked loose and the others couldn't handle the load.

ETa: quoted the wrong post...

 

[kco]

It would be interesting to know why they worked their way out. Was it just on one side or on both sides? Perhaps they never were installed correctly.

You might want to call a dealer to get the torque values, and then regularly check the torque on all the bolts for a while. The new ones should be re-torqued until they quit stretching any way. If you find they continue to loosen it might be a good idea to use blue lock-tite.

 

[POC]

It would be interesting to know why they worked their way out. Was it just on one side or on both sides? Perhaps they never were installed correctly.

You might want to call a dealer to get the torque values, and then regularly check the torque on all the bolts for a while. The new ones should be re-torqued until they quit stretching any way. If you find they continue to loosen it might be a good idea to use blue lock-tite.

I planned to loctite them anyway.