Measure the small diameter of the
internal threads on the nut.
Now increase the size on the caliper by
about 30 thousandths of an inch. You will use this setting to check
the size of the tenon you are about to turn.
Now turn the tenon to the size on the
Notice that then end of the tenon has
been reduced in size so that it will fit through the small diameter
of the nut. Also notice that a lead has been cut so the threads can
start nice and straight.
(For those unfamiliar with the word,
“lead,” it just means a taper onto which the threads will start.) It
is pronounced as “leed.”
Next the nut will be
screwed onto the tenon, and it will cut its own threads.
Cut Here you see the nut just started
to thread on. It is imperative that the nut be straight. If
you start it crooked, it will not straighten out.
I use a pair of channel locks and a
wrench to screw the nut into place.
Once the nut has bottomed put it should
be nice and square.