Need help finding a jam nut.

[jjkrjh]

I'm having no luck finding an odd sized jam nut, and running out of places to try.

stainless steel
1/4"-20 jam nut
right hand thread
3/8" across the flats (not 7/16")

These nuts sit inside a plastic mount. There is not room to use a 7/16 across the flats nut. It has a molded 3/8 hex hole, that the nut sits in and secured, so that the pinch bolt can be tightened.

So far I have tried all of the usual places without any luck. Mcmaster Carr did have a left hand threaded nut that is 3/8" across the flats, but no right hand nuts. Any help would be greatly appreciated.

 

[alwaysFlOoReD]

Time to grind? It doesn't have to be perfect if it's going into plastic.

 

[jjkrjh]

Get a #10 nut. Drill and tap to 1/4-20.

Already thought of this. Only have 75 to drill and tap.

 

[mark#3]

There is a website to get jam nuts, I'll look to see if I can find it

 

[Dustball]

Could you use coupling nuts?

https://www.mcmaster.com/90264a435

 

[The Cobbler]

^^^ he needs stainless

 

[Dustball]

^^^ he needs stainless

https://www.mcmaster.com/90268a029

 

[Mr_fixit]

I'm having no luck finding an odd sized jam nut, and running out of places to try.

stainless steel
1/4"-20 jam nut
right hand thread
3/8" across the flats (not 7/16")

These nuts sit inside a plastic mount. There is not room to use a 7/16 across the flats nut. It has a molded 3/8 hex hole, that the nut sits in and secured, so that the pinch bolt can be tightened.

So far I have tried all of the usual places without any luck. Mcmaster Carr did have a left hand threaded nut that is 3/8" across the flats, but no right hand nuts. Any help would be greatly appreciated.

You sure it's not supposed to use a 7/16 nut that you tap in a 3/8 hole? wouldn't that be 1/32" too small all the way around. Some call that a cxnt hair.

 

[jjkrjh]

https://www.mcmaster.com/90268a029

The couplers would work, but don't want/can't have the nut protruding to catch things. Also thought about getting a coupler and cutting jam nuts out of them. If all else fails.

 

[jjkrjh]

You sure it's not supposed to use a 7/16 nut that you tap in a 3/8 hole? wouldn't that be 1/32" too small all the way around. Some call that a cxnt hair.

The 3/8 across the flats nuts snap into the plastic mounts. A 7/16 across the flats don't even come close. Also thought about heating a 7/16 wide nut and melting into the plastic. But the plastic mount is too thin on one side.

 

[bugnut]

Looks like they might be here:

https://www.fastenersclearinghouse.com

or if too pricey #10 nuts drilled and tapped, but 75 is like production to me!

 

[guppymech]

Can you switch to a #10 screw, 3/16 bolt.