We bought these from an old Fender Service Center over twenty years ago. Most of the packs do not carry the Fender Part Number; they're in plain Ziploc bags but they are all exactly the same. I've confirmed that the metric threads are 3mm, overall length 1.668mm, nickel plated steel, pan phillips head. If you've got one of those very nice '80s Fender Japan Strats this is the saddle length screw you need to restore it.