6-32 UNC bolts usually turn up on American/Mexican/UK made instruments and parts - primarily pickups and switches, but they are becoming more common on Eastern made things too nowadays - its a little bit confusing, because theres a few different "types" (and you do get guitars that have a mix of different heads/lengths) - so as a quick, rough and ready guide.

Good quality Springs to hold Pickups against pick guards reliablly, with a little bit of play.

Silicone tuning used on single coils, traditionally used in place of the springs (which have become much more common nowadays) - but the old silicone tubing has a bit of vintage charm about it.

Full Thread, Phillips, Dome head Screws used to mount a humbucker through the pickguard or mounting ring. Supplied with Springs (4)

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This is a set of switch mounting and pickup height adjustment bolts for the Fender® Statocaster® and similar guitars.

Specifically, these are 6-32 UNC (imperial thread) bolts, with dome, phillips heads, with 6 "small" head screws for the pickups, and 2 larger headed versions for the switch, as well as 6 height adjustment springs.

This is a set of switch mounting and pickup height adjustment bolts for the Fender® Statocaster® and similar guitars.

Specifically, these are 6-32 UNC (imperial thread) bolts, with dome, phillips heads, with 6 "small" head screws for the pickups, and 2 larger headed versions for the switch, as well as 6 height adjustment springs.

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