O2 sensor thread

[Ken Mayer]

[snip]

> the "tap" started -- use a belt or disc sander.  If you must
> use a grinder, you'll probably have to take a jeweler's file
> or a "threading" file to clean up the threads (Sears used
> to sell the "threading" file -- it's a file with teeth cut
> on the standard thread pitches .... come to think of it, it's
> cut in tpi so it's not metric ... oh, well)

Thread files are available in metric and sae sizes.  My local auto parts
store has them on the "KD" display board.  I've seen them in other brands
too.  Each file is a square cross-section and has 8 different pitch thread
sizes.  It just takes a steady hand to use them correctly.

Ken
:-)