.
. 253-18 253-17 253-12 65-67.5
1500 - 1600 - 2000 They
came with a peg (253-18) that can be easily unscrewed out
of the knob. The external threads of this stud are about
32 per inch. The internal threads of the knob are about
38 threads per inch as best as my eyes can tell. The
253-18 "becomes" the 253-17 if you unscrew the
peg. They
came with a threaded hole #253-17, about 38 threads per
inch. They
came with a stud that doesn't seem to be removable
easily, #253-12; about 38 threads per inch. I
have yet to take enough of these lighters apart to say
why there are these differences.
Datsun
Roadster Cigarette Lighter Knobs
These
came three ways...with the SAME part number!
Datsun
SPL310 SPL311 Cigarette Lighter Knobs