Oil pressure switch screw threads

[PatrickDoss]

Lost the screw that holds the wire to the oil pressure switch when checking valve clearance.    Honda only sells it with the switch.  Anybody know the thread pitch so I can find one at the hardware store without having to unscrew my switch and take it with me?  I'm assuming some size machine screw. Thanks in advance.

[John Schmidt]

Pat, you can count on it being metric as well. Thought I had a spare but can't lay my hands on it just now. I know it's buried out in the shop....somewhere?!?