GB/T 1800.1-2020 Active
GB/T 1800.1-2020 Geometrical product specifications (GPS)—ISO code system for tolerances on linear sizes—Part 1:Basis of tolerances, deviations and fits
Abstract
This part of GB/T 1800 establishes an ISO code system for linear dimensional tolerances, which applies to the following types of dimensional elements:
a) cylindrical surfaces;
b) two relatively parallel surfaces.
This part defines the basic concepts and related terms of the ISO code system for linear dimensional tolerances, and provides a standardized method for selecting commonly used tolerance zone codes from a variety of options.
In addition, this part defines the basic terms for the fit of two dimensional elements that are not subject to direction and position constraints, and explains the principles of "reference hole" and "reference axis".
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 1800.1-2020 |
| CCS | Basic standards and general methods |
| ICS | Limits and coordination |
| Implement Date | 2020-11-01 |