I'm going to measure an L-series one very shortly, if i have an A-series one in the shed I will measure for you (will be new though ie uncompressed) I'm going to put my guess in at .050"
I measured one that I had , not sure if it had been torqued up to a head before or not, measured 1.1mm is this about right? NO WHERE in my manual or on the net is normal and compressed values listed