Anonymous
Anonymous asked in Home & GardenDo It Yourself (DIY) · 1 month ago

# I was wrongly told at H. Depot that 10mm sockets are used on 10mm nuts that go on 10mm bolts. Turns out, a 6mm nut fits. Whats going on here?

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• Anonymous
1 month ago

The "size" of a bolt or nut is related to the THREAD, not the hex size!!

An M6×1.0 bolt or nut likely has a 10 mm hex.

The size of a hex socket or wrench is the size of the hex, not the size of the bolt!

"Standard" (European) metric bolts often have different size hex heads and hex nuts than American metric automotive bolts, because they (USA) want non-standard metric standards!

People in general in USA are often very confused about metric fasteners and metric sizes.  Car mechanics and machinists generally understand.

The guy at Home Depot seems clueless like most 21st century sales associates everywhere.

• 1 month ago

Home Debit guy was an idiot and calls a six mm bolt a ten because that is what size the hex head is.

• Kenny
Lv 7
1 month ago

To make it simple, the size of the bolt or nut is not the size of wrench that goes on it .  A 1/2 " bolt is the size of the shaft, threads, etc . would take a 3/4' or so wrench .

• 1 month ago

You were NOT told what you think you heard.

Note: It is physically impossible for  6mm nut to fit a 10mm bolt, regardless of measuring inside or outside. That is absolute proof YOU are the problem.

• Anonymous
1 month ago

Because these things are measured by their outer circumference- thus a 10 mm bolt goes on a 6 mm nut. This is the basic mathematical rule of any kind of circle jerk.

• arther
Lv 5
1 month ago

generally a bolt with a 10 mm head has a m6 thread as in the diameter of the thread is 6mm.

• Anonymous
1 month ago

You need someone to show you how nuts and bolts are removed and installed using the correct sockets and wrenches.  You do not have a clue yet.

• Edwena
Lv 7
1 month ago

A bolt is sized by the diameter of the bolt shaft. There is a head on the end of the shaft where you put the wrench. That head is bigger than the bolt shaft. So to put a wrench on the head you need a wrench bigger than the shaft.  If they did it your way and sized the bolt by the head, then all of the holes that are drilled for the bolt to go into would be so large that the bolt wouldn't bolt up.  So, you would have to make a conversion to get a smaller bit to drill a smaller hole. So, you are screwed one way or the other.   Life is not fair.

• 1 month ago

the socket is actual size.  nuts and bolts are measured by the size at the threads ... which is different

• 1 month ago

Most likely user error