Feridax key information - By Dean Kirsten
To operate most any Feridax locking throttle you need an FA coded key. Starting in 1932, British Ford began to use what is called an "MRN" series key, which has codes ranging from 01 to 50. These codes were used through 1949, but as automotive production increased, they needed more codes to go around. So, beginning in 1949, British Ford moved over to a "FA" code, which features codes from 501-625. These codes were widely used from 1949 until August 1959. In November 1955, another key code appeared, this time a "FP" code, which saw numbers ranging from 626-750. So for the most part, the early Anglia used either the MRN or FA keys, and depending on when your car was actually built will determine which key code series was likely to be used. Ford Populars generally used either the FA or FP keys depending on their age.
Key codes can be found either on the face of the Feridax lock cylinder or on the interior surface of the split throttle housing. Just keep in mind that tumblers could have been changed to another era key code at any time. Having a duplicate key made today is possible, as long as you can find the correct key blank to start with.
Keys using the FA code series uses a #62DG blank, and FP keys want the #62DP blank, which are all still available, if you know where to look. Original keys were made by Union, Wilmot Breeden, and today, we see Curtiss, Taylor and Ilco.
