1. General Purpose Standard Acme Thread Series
A selecteds erieso f diametersa nd associatedp itches of Acme threads, listed in Table 2, are recommended
as preferred. These diameters and pitches have been carefully selected to meet present needs with the fewest
number of items in order to reduce to a minimum the inventory of both tools and gages.
2. Classification and Tolerances, General Purpose Acme Threads
There are established here in three classes of threads for general purpose: 2G, 3G, and 4G. These classes together with the accompanying specifications are for the purpose of ensuring interchangeabilityof Acme threaded parts. Each user is free to select the classes best adapted to his particular needs. It is suggested that external and internal threads of the same class be used together for general purpose assemblies, Class 2G being the preferable choice. If less backlash is desired, Classes 3G and 4G are provided.
Notice:
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Disclaimer:
This data is provided for general information only. The intention is to provide accurate information,regardless,errors may exist in the supplied information. If accuracy is critical, base your final decisions on the data provided in the root document: ANSI/ASME B1.5; If you any request or questions please contact ： sales@fyougauges.com
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General Purpose ACME Screw Thread Data per ANSI/ASME B1.5