While it might not be specifically listed on the heads or steel, virtually all modern corrugated moulder knife steel, and moulder cutterheads will have 16-60 corrugations.
What does 16-60 mean, and why is it important? The first part of 16-60 means that there are 16 corrugations per inch of knife steel, which equals 1/16” between each peak of corrugation. The easiest way to check this for yourself is to place a measuring device across the corrugations, and count the number of peaks (shown below).
The second part of 16-60 means that the angle between corrugations is 60 degrees. This angle is much harder to measure without specialized tools, however there are a couple of easy ways to check that your heads or steel are actually 16-60.
Luckily, the only other standard I’m aware of is 16-90, or 90 degree corrugation angle, which is quite a bit different from a 60 degree angle. Simply looking at the corrugations with the help of some magnification should make it obvious if you’re looking at 60 degree or 90 degree corrugations.
If you want to be certain, get yourself some corrugated moulder knife steel that has 16-60 corrugations, and compare it to the steel or head you’re not sure about. The difference between the corrugation angles should be clear.
To answer the obvious question: No, you should not use 16-60 heads with 16-90 knife steel or vice versa. The different angles will not mesh properly, and you will have a very dangerous situation where knives can fly out of heads at very high speed.
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