Looking for an odd size bolt

[Hooked_on_HP]

Yea, a good cutoff blade in a small grinder will make short work of a grade 8 bolt.

I think they will have to cut off 60 bolts.
Bill

 

[queen of spades]

If the tiller is Italian, it's probably metric. Why don't you replace with the proper metric size? M12 is slightly larger than 7/16". McMaster-Carr sells the metric grade 10.9 in both fully threaded and partially threaded lengths.

Therein lies the problem. The holes in the tines are 1mm too small. The bolts for the existing tines are in fact 12mm. I would need 11mm shouldered bolts, but didn't find any such bolt (of any length) locally.

ACE had a 7/16 shouldered bolt that fit snug in the replacement tines. Using the 11mm (or 7/16) bolts means I'll have a little slop in the mounting holes, but I don't know what else to do about it.

And yes I have 60 bolts to put in.. so I'd like to avoid any cutting.

 

[mas1237]

I got the picture now. The replacement tine's hole diameter isn't quite the same size as the old ones being removed.

 

[Huey]

Queen, Check BoltDepot.com. They have a shouldered bolt section if I recall right. I have ordered several times from them and they are fast and probably the lowest priced you will find.
Huey

 

[Sandlot]

I think they will have to cut off 60 bolts.
Bill

Piece of cake. Many times I have had to cut grade 8 all thread to make studs for valve installation, nutt'in to it!

 

[Eagleview]

Get some thin wall steel tubing and cut off 60 bushes that will step the tyne holes down to the bolt size you are using . A power hacksaw , bandsaw or a drop saw can do this if you use a positive stop so all are the same length .

 

[PILOON]

Go to an aviation supply house.

AN, and MS bolts are generally only threaded 1 1/2 the diameter, just enough for a nut to grip plus 2-3 threads.

Would read, AN7-(eg;32=1", -64=2")

The AN series is equivilant to grade 8 and MS closer to G12.

 

[Ford850]

Get some thin wall steel tubing and cut off 60 bushes that will step the tyne holes down to the bolt size you are using . A power hacksaw , bandsaw or a drop saw can do this if you use a positive stop so all are the same length .

Iron Horse beat me to it. Just cut some bushings out of tubing to take up the space of the larger holes.

 

[Wayne_H]

Queen, Check BoltDepot.com. They have a shouldered bolt section if I recall right. I have ordered several times from them and they are fast and probably the lowest priced you will find.
Huey

Do like he says and get what you want from these guys. Fast service, good prices. They will have what you need, I've bought a lot from them. Way cheaper than Fastenal. But if you need to get them from a local store, go to Fasternal.

Bolt Depot - Nuts and Bolts, Screws and Fasteners online

Wayne

 

[Mace Canute]

Another way of doing it, (not my first choice mind you, I like the bushing trick myself ), but you could do it with a a 'tap end stud" which looks like this. Put a nut on the short end with some Locktite and it's close to what you want.

McMaster-Carr has them close to what you need.