Wheel bearing won't have any threads. If your talking about the post they mount on, then you can use a pitch gage to get the number of threads per inch and then compare that to a thread chart to determine if they are coarse or fine.
300 to 400 depending on the type of cotton and whether or not the pillows were fabricated in Malaysia or Portugal. The thread count may be higher if the pillow is more expensive.
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.
Take the knob with you to a hardware store, and find a metric bolt that will screw into the knob. This would be the easiest way.
normal thread is used, the thread used in Tailor work. It is just the way they use it, it seems magic.
You thread a needle with the thread you want to pull through, pass the needle into the material slightly within the margins of the pattern and pull the thread through. You don't really have to pull the top thread through to tie off because the stitch density is high enough to lock the thread, you can clip close. If you feel the need, unpick a few stitches (don't rip them, unravel the top and bobbin threads) until you have enough length to work with, pull the top thread through the fabric with the bobbin thread ad tie them together. When you change top thread, lay a short tail of the previous color and the new thread across the next pattern section and the thread will be locked. Same idea when you change the bobbin thread
wheel bearings are not threaded, the beaing races are smooth as is the axle and hub where the bearings fit
Coarse tacking thread.
It's thread which is thicker or heavier than others, or which has a rougher or more fibrous surface.
Is made of coarse tacking thread.
UNC stands for "UNIFIED BOLT THREAD COARSE" UNF stands for " UNIFIED BOLT THREAD FINE"
University of North Carolina Unified National Coarse (Thread forming)
No. The coarse thread UNC screws will not thread into the fine thread UNF holes. UNC must be used with UNC and UNF with UNF.
It's used to make burlap cloth, which is a coarse sacking material.
He is right. A fine thread would be 1/2-20.
All thread pitches are standard inch size thread pitches. I can't be more specific than that since I don't know exactly which bolt you are talking about. An example for you is the starter bolts are a 3/8-16 pitch, which is standard coarse thread. Most body panel bolts are either 5/16-18 or 3/8-16 pitch, once again, standard coarse thread pitches.
Did you ever get anywhere on this thread? I'm looking to replace the front bearings and rotors on my 2000 ZR2.
general use coarse thread bolt is correct. 1/2 inch bolt. 13 threads per inch.