This International Standard tabulates ISO inch screw threads {except for pipe threads) having the basic profile for triangular screw threads specified in ISO 68, ISO general purpose screw threads – Basic profile.

It comprises both a general plan of the ISO inch screw threads and the ISO inch screw threads for screws, bolts and nuts, the latter being a selection from the former.

It contains sizes in the diameter range 0.06 to 6 in, comprising a number of series of diameter/pitch combinations, together with a system of thread designations.

It remains for each industry to choose for itself, by means of selection among the screw threads of this International Standard, the diameter/pitch combinations appropriate to its own needs.