Tyre Valve Thread (dimensions above given in millimeters except TPI) per DIN 7756
Tire Valves Screw Threads are a hybrid between the UN-series and M-series series screw theads.Tire Valves Screw Threads have developed/evolved over the years outside of published specifications and due to backward engineering of competitor products. As a result, there are many slight variations of the Tire Valves Screw Threads; all of which seem to interchange. Subsequently; Tire Valves Screw Threads have been/are codified in DIN-7756 (German Standard) and BS-811 (British Standard) and ISO-4570 (International Standard) and other country specifications; all of which have slight variations on the theme.
We understand that ISO4570 was published with the intent of harmonizing the numerous divergent specifications into one internationally interchangeable uniform Tire Valves Screw Thread size chart/design/designation. We think it is wise of any manufacturer to use the ISO 4570 designation for Tire Valves Screw Threads to assure international interchangeability of their products.
This data is provided for general information only. The intention is to provide accurate information; regardless; errors may exist in the supplied information. If accuracy is critical, base your final decisions on the data provided in the root documents: BS811; DIN 7756; and ISO4580 which are copyrighted document. To purchase a copy visit an Authorized Reseller.
Original Posting: 7/14/2009
Last Revision: 8/7/2018
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