Below is an indicative reference table mapping common metric thread pitches to their corresponding DIN 76-1 Form A dimensions. (Note: Always verify with an official, licensed DIN 76-1 PDF for manufacturing purposes). Thread Pitch ( Undercut Width ( Transition Radius ( Depth of Undercut ( 0.7 mm 0.8 mm 1.0 mm 1.25 mm 1.5 mm 1.75 mm 2.0 mm
Thread run‑outs and thread undercuts might seem like minor details, but in precision manufacturing they can make the difference between a reliable assembly and a field failure. DIN 76‑A is one of the most widely referenced German fastener standards for ensuring that threaded components seat correctly, tools run safely, and threads meet their specified strength requirements. If you have been searching for a – whether to download the official document, understand its dimensions, or apply the standard in your own designs – this article provides a comprehensive, actionable guide.
The official publisher of German national standards. din 76-a pdf
): The machined diameter of the relief groove. It is calculated by subtracting a specific factor from the nominal thread diameter ( ). Formula: is a standard-defined depth variable). Groove Width (
The authoritative source is (formerly Beuth Verlag), the official distributor of DIN standards. You can purchase the current DIN 76‑1:2016‑08 as a PDF in German or English. Below is an indicative reference table mapping common
In the technical diagrams found in these PDFs,
: Short undercut for external threads (used where space or material length is limited). DIN 76‑A is one of the most widely
Since the official full standard is protected by copyright, you can access summaries or draft versions through authorized distributors or documentation platforms.