Regarding House

Not All Doorknob Spindles Are the Same Thread Pitch

Recorded on August 15th, 2016

Arrrrrrgh. The 17/64” x 17/64” x 3.5” replacement spindle I got for the back door doorknob was the wrong thread pitch. I thought they were all supposed to be standardized, but the set of doorknobs I have turned out to be 16 threads per inch (TPI), and the new spindle I bought is 20 TPI (here):

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The only spindle on Amazon or anywhere else that’s 3.5” with 16 TPI is a 9/32” x 9/32” “non-standard” spindle, so I hope that’s close enough when it gets here. Here it is:

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