Quote:
Originally Posted by Spikenipple
Do you know the actual dimensions of the internal thread? I guess you measured the 8.80 internal rad from the peaks of the thread?
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yeh, well the thread does not have peaks they are flat but yes 8.8r is the internal thread dimension.
right measured the axle and the threads OD is 19.92 pitch (measured a few times and got 19.80 as well so will double check) still looks like 2mm pitch and id of thread is about 17.8mm
i will double measure tomorrow but im guessing m20 x 2mm pitch
EDIT looking it up again this is what i have in my reference book, for a m20 x 2mm ISO metric special pitch tapping drill sizes
nominal DIA 20.00mm
pitch 2mm
basic major dia 20.00mm
basic effective dia 18.701
basic minor dia of threads
.external 17.835mm
.internal 17.835mm
tapping drill size 18.00mm
clearance drill size 20.25mm
what do you think ? m20x2mm pitch