He is right. A fine thread would be 1/2-20.
A, the half inch bolt has 13 rows of thread in one inch.
general use coarse thread bolt is correct. 1/2 inch bolt. 13 threads per inch.
automotive service technician development
There is not much school necessary to become an automotive technician. You have to go to auto-tech school for at least two years to get your degree. Then you can get your job.
The first technician is correct, it is a coarse thread. I'm not sure there is a bolt called 12-13 so I am assuming you meant 1/2 - 13. Wich would be a bolt 1/2 inches long. The diameter of a #13 unc bolt would be ( 13 x .013in ) + .06 = .229 inches in diameter.
The University of Alaska, Anchorage offers a certificate program in Automotive Technology.
One can learn about automotive care by looking at a manual which can be bought at any book store. Also, one can find more information by asking someone who is skilled in automotive care. One example is an auto technician.
The Auto Technician's role is to inspect and repair cars.
You can find an automotive degree online at www.directoryofschools.com/.../Auto.../Online-Automotive-Degrees and www.directoryofschools.com/auto-mechanic-school.htm.
Some places require a 2 year degree in automotive service while others will have you start out as an aprentice and work your way up.
form_title=Automotive Glass Repair form_header=Need a your car glass repaired? We will help find you an expert auto glass technician. What is the year, make and model of your vehicle?=_ Please describe in detail what happened.=_ How long has the glass been damaged?=_
I don't personally own an automotive business, however, you can get a job pretty easily by going to the school you graduated from and signing up for help in the job placement services.