Pardon me if I am a bit slow in understanding, in my experience most aircraft manufacturers quote full Aeroquip part numbers in their IPC where that is what they specify.
I'll pardon you for being so slow - its mostly covered under Sub-part M these days and who really understands
that stuff, eh? Even the chaps who wrote it can't explain it properly...
In most airlines or repair agencies there's a group of elderly grey haired gentlemen (a bit like me) beavering away in the back offices of Tech Services, identifying and authorising the use of alternative part numbers under their design approval.