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petehoovie · 07-01-2020, 01:42 PM

Aren't all spark plugs metric thread? According to Machinery's Handbook (24th ed pg 1650), there are four standard SAE spark plug threads, all metric: M18 x 1.5; M14 x 1.25; M12 x 1.25; and M10 x 1.0

07-01-2020, 01:42 PM	#2
petehoovie Senior Member Join Date: May 2015 Posts: 11,643	Re: Compression tester Aren't all spark plugs metric thread? According to Machinery's Handbook (24th ed pg 1650), there are four standard SAE spark plug threads, all metric: M18 x 1.5; M14 x 1.25; M12 x 1.25; and M10 x 1.0 __________________