Re: 1969 Hazard Knob
An update for anyone searching about this now or later:
I got the black knob with "HAZARD" written on it and it was just a sleeve that fit loosely over the stud present in the hazard switch. Since both that one and the chrome one with "FLASHER" written on it were indicated for my car by different vendors, I got one of the chrome pieces. That stud on that one, however, was too large and wouldn't thread into the switch.
The previous owner had probably installed an after market turn signal switch, of which there are several different designs. The one I have in my car is probably a later switch. It does use the black knob, but what I didn't realize is that it needed a screw -- I assumed that it just threaded itself when twisted onto a stud. The correct screw itself was $2.00 online, with $5.00 shipping, so I just found the size of screw I needed, cut it down to size, and cold blued it. The specs are below:
-- 6-32 thread, countersunk head.
-- The hardware store had two lengths: 3/4" and 1". The 1" screw was too long and while the 3/4" screw worked, the knob felt wobbly when actuating it. I filed down the 1" screw to about 7/8", or down to 22-23 threads. Now the knob is firm and works.
Hope this helps someone in the future.