Vintage HP equipment certainly used Phillips head fastners. I wonder when they changed. With System II maybe?
Having worked in aviation as well as electronics and also had an interest in cars I've had to deal with a lot more than Philips, Posidrive? Hex and Torx. For example
Spline (Various number of points larger sizes).
Bristol Spline ( Small sizes Allen key / Torx like but parallel sided flanges used on some early HP shaft hardware lih gears and knobs also Collins & Juke boxes)
RIBE / Polydrive (Variation on spline with rounded ends used by Fiat and some GM)
XZN aka triple square
Various "security" bits and variations
For Aerospace:
Tri-wing
Tripoint
Torq-set
Hi-Torq (particuarly prone to damage, looks like a simple slot but bottom of slot is curved and sides are undercut. Tool has a dovetail)
SWT
B.N.A.E aka French Recess.
Robert G8RPI.
