In looking at the 1960-68 MPC, it shows that the clip for the Fan Shroud is Part Number 380250-S. In going to the 1969 Ford Standard and Utility Parts Catalog (copy of page 67 attached), it shows that exact Part Number is 380250-S32. It also shows that it is 5/8" x 5/8". The S-32 is "Black or Zinc Chromate Primer (green). Does this match what you have ?
Bob