DIN 7161 was replaced primarily by DIN EN ISO 286-1 and DIN EN ISO 286-2 ( Geometrical product specifications (GPS) - ISO code system for tolerances on linear sizes ).
The standard is a foundational document for engineering tolerances, specifically focusing on ISO deviations for internal dimensions (holes) with nominal sizes ranging from 1 mm to 500 mm . While technically superseded by modern standards like ISO 286 , it remains a critical reference in legacy technical documentation and global manufacturing. Understanding DIN 7161: Scope and Purpose
Understanding where DIN 7161 fits within global standards helps clarify its replacement:
Many university engineering departments hold physical or digital archives of withdrawn DIN standards. Summary Comparison: Old DIN vs. Modern ISO Old DIN 7161 Modern ISO 286 Withdrawn / Legacy Active / Current Jurisdiction Germany (DIN) International (ISO) Size Limit 500 mm to 3150 mm Up to 3150 mm Global Acceptance din 7161 pdf
The four classes are:
Rows are categorized by letters representing the deviation position (e.g., is the standard hole, with lower deviation Deviations (
If you need the exact for a specific mating part calculation? DIN 7161 was replaced primarily by DIN EN
The German Institute for Standardization (DIN) created it. It complements the broader ISO system of limits and fits.
ISO-Abmaße für Innenmaße (Bohrungen) für Nennmaße von 1 bis 500 mm Status: Superseded Replaced By: DIN ISO 286-2
The standard aligns with ISO recommendations (specifically referencing ISO/R 286-1962), ensuring international compatibility in fitment. Key Characteristics of the DIN 7161 Standard The German Institute for Standardization (DIN) created it
DIN 7161 did not exist in a vacuum. It was part of a coordinated system of standards for limits, fits, and gauging. Understanding this ecosystem is key to grasping its full significance.
Note: Many engineering universities and machinery handbooks offer free, abridged tolerance chart PDFs that cover the most common H7/g6, H7/h6, and H7/p6 values for quick shop-floor reference. How to Read a DIN 7161 Tolerance Table
If you need a specific tolerance calculation for a project, I can help you find that, or if you're looking for help with other engineering standards like ISO or BS, Share public link
Selection guides for choosing the right fit for specific mechanical applications. Where to Find Official PDFs
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