I spec forks by their "class" i.e. class II for trucks up to 6000 lbs. or 3000kg, then class III, IV, etc. and fork length and width and thickness, all in fractional measurements. if i need a special tip profile or a fully tapered and polished (or FTP) or lumber fork, i specify that, or a brass-clad explosion proof fork, or with drilled hole in the tip (it's better to specify this on a new fork rather than drill it later to an unsafe size or position). and never torch-cut a hole in a fork! this anneals the fork and instantly fails it in an inspection as the tip can now bend or break off.