Thread: Mystery Thread
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Ken Vale
 
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skuke wrote:
On Tue, 07 Jun 2005 19:36:28 -0400, Ken Vale wrote:


I have a thread here I can't find a standard size for, it is off of my
bicycle (an older non-high performance Norco mountain bike, it was made
in Taiwan). The nut holding the crankshaft on is stripped, the threaded
rod is 0.385 inches (measured with a digital caliper) and looks to be
about 20 TPI (sorry don't have a thread gauge at home). A 3/8 fine nut
will not fit on (which is what my boss thought it would be looking at
the stripped nut, though the stripped nut did fit on a 3/8 fine bolt).
Anyone have an idea on the thread size I need so I can buy or make a new
nut?
Ken




Might get a better thread measurement by measuring the distance of 10
threads and dividing by ten for metric thread pitch. ....much easier than
measuring two adjacent threads.

Maybe but there is not enough length for me to measure 10 threads, I did
however measure a 1/4 inch and count the threads (just over 5).
Ken