Can Turnlock supply the old 15F part numbers?
Yes, Turnlock can provide the new MPP parts which are the new part numbers for Turnlock.
Here is a list of the old coatings:
AC = steel cadmium plate clear chromate not ROHS conform
AF = steel cadmium plated gold chromate not ROHS conform
AG = steel black phosphate
All the coating listed above have become obsolete due to non RoHS conformity.
The new standard available parts are steel with nickel plating.
Here's a cross reference list: