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What size nut do I need?

S

Syringer

Lifer
So I have a nut that used a 7/16" wrench to remove--so naturally, I went to the hardware store and picked up some 7/16" nuts, but apparently that must refer to the inside hole.

Is there a way to tell what size nut I need based on the fact that the outside is 7/16"?
 
Nope.
You'd need more info. Why not just take the nut you removed to the hardware store with you? Alternatively, take whatever it is you need the nut on to the hardware store?
 
Originally posted by: Syringer
So I have a nut that used a 7/16" wrench to remove--so naturally, I went to the hardware store and picked up some 7/16" nuts, but apparently that must refer to the inside hole.

Is there a way to tell what size nut I need based on the fact that the outside is 7/16"?
Click to expand...

Why do you need to replace it? Did you bust it?
 
The wrench size does not tell you. Nuts and bolts a specified by two numbers: the diameter, and a threads/inch count. Diameter may be expresed either as a simple integer number, or as a fraction of an inch. So you might see a size label like "8 x 24" or like "1/4 x 20". Metric diameters always are integer numbers (in mm) and their threads are per mm, not per inch, so they look like "10 x 2.0".

Take the old nut to the store. If it's still in decent shape, just try out bolts that look the right size, and see if they will thread into and though the nut smoothly. If it jams quickly, the bolt is wrong. If it is really stiff but still will thread right through, probably the right bolt but the nut is rusty or distorted out-of-round. Whatever fits, look at its label, something like 1/4 x 20 - and find that nut. Verify to be sure it fits the same bolt.

As futuristicmonkey said, don't forget to try metric ones.
 
Take the nut to the hardware store. All the stores around me have threaded test bolts that you can thread the nut onto. It'll give you your ID and thread pitch
 
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