AS B202-1962

Based on the American Acme Screw Thread Standard ANSI B1.5 1952 This Standard defines the Acme form of thread and gives complete tables of basic sizes, limits and tolerances for a Standard Series of single-start Acme screw threads in the range n to 5 in. diameter. This Standard Series is in agreement with that given in ANSI B1.5 except for the pitches associated with diameters 3/8 in., 7/16 in., 1 in., 1-1/8 in., and 1¿ in. The three classes of fit 2G, 3G, and 4G in the US Standard are given and an additional finer class 5G is also provided.