Fender generally uses logarithmic/audio for both.
Allparts EP-0886 CTS 500K Solid Shaft Audio Pot - Single Item
Vintage 1977 Fender CTS 500k Knurled Shaft Guitar Parts Tele Custom Deluxe
Allparts EP-0086 CTS 500K Split Shaft Audio Pot - Single Item, Left-handed
CTS 500K Split Shaft Potentiometer - Audio or Linear Taper Pot
Allparts EP-0086 CTS 500K Split Shaft Audio Pot - Single Item
Fender S-1 Switch Push/Push Pot CTS 500K Short Shaft Audio Taper Potentiometer
