People are always looking for axel swaps, and there is no 'database' of what fits what, so let's get one going, list your successful transplants and we can build a reference
Shimano SX PD15 are interchangeable with KKT AMX nuts and washers will have to kept with the og spindles as tabbed washer style is different and I think there are some thread differences as well as nut difference imperial/metric
All Shimano DX style pedals are fully swappable regardless of brand or cost. Top tip from john4130 "dont buy plastic dx type pedals to swap with shimano dx spindles, i tried it and their too short. wasted £3.50 on them. gonna try these ones next. at £4 it's worth a try"