Understanding DIN 7161: ISO Deviations for Holes is a historical technical standard titled "ISO-deviations for holes for sizes from 1 to 500 mm". Originally published in August 1965 by the German Institute for Standardization (Deutsches Institut für Normung), it provided essential data for the ISO system of limits and fits specifically for internal dimensions or bores.
DIN 7161 is a German standard that specifies dimensions, tolerances, and technical requirements for metric threaded pins (Gewindestifte) with hexagon socket (internal wrenching) or similar small threaded fasteners used primarily as set screws, locating pins, or for securing components without a head. It defines form factors, thread engagement lengths, permissible deviations, surface treatments, and marking where applicable. The standard ensures interchangeability and reliable mechanical function in assemblies across industries such as machinery, automotive, and tooling. din 7161 pdf
Online libraries like Scribd host user-uploaded copies for reference, though these should not be used for current manufacturing without verification. DIN 7161 - 1965-08 Understanding DIN 7161: ISO Deviations for Holes is
: 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 DIN 7161 - 1965-08 : It defines specific
It is important to note that has been largely withdrawn and replaced by newer international standards, specifically ISO 1938-1 , which governs "Plain limit gauges of linear size." [1, 3]
While no longer active for new designs, PDF versions are still accessed for historical reference, maintenance of older equipment, or academic study through platforms like DIN Media or archival sites. Expert & Community Perspectives