This standard provides comprehensive tolerance tables for internal dimensions (holes). Its primary function is to define the maximum and minimum allowable deviations—measured in microns—for various size groups across a range of 1 mm to 500 mm. Current Status DIN 7161 is a withdrawn and superseded document.
Reserved for high-precision gauges and laboratory instruments.
: It covers precision engineering for everything from tiny watch components (1mm) to large industrial engine bores (500mm). ISO Alignment
Tables of standard tolerance grades and limit deviations for holes and shafts. din 7161 pdf
Because technical drawings and legacy contracts still frequently reference old norms, many third-party document-sharing platforms host scanned uploads of the original DIN 7161 sheet.
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It was developed by the Deutsches Institut für Normung (DIN), the German Institute for Standardization, and published on August 1, 1965. As an older standard, it has since been , meaning it is no longer maintained for new designs. Measurement Range Years later
While many engineering standards have evolved, understanding DIN 7161 is crucial for interpreting older technical drawings and understanding the foundations of modern tolerance systems.
Companies maintaining older machinery must understand these tolerances to ensure replacement parts fit.
: It defines specific classes (like H7 or G6) that determine how much a hole can vary from its nominal size while still being "perfect". Measurement Range While many engineering standards have evolved
Years later, the paper booklet was replaced by a digital ghost: the din 7161 pdf
DIN ISO 286-2 outlines the tables of standard tolerance classes and limit deviations for holes and shafts.
These items are illustrative—refer to the official standard for exact numeric values.