Objavljen
Specifies the essential dimensional characteristics of a spark-plug type used with spark ignition engines. Tabulates major, pitch, and minor diameters for plug thread and connector thread. A figure illustrates shapes and reference quantities of concern.
POVUČEN
ISO 3412:1979
OBJAVLJEN
ISO 3412:1992
90.20
Početak postupka preispitivanja standarda
15. 4. 2026.
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