Published
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. This third edition cancels and replaces the second edition (1979).
WITHDRAWN
ISO 3896:1979
PUBLISHED
ISO 3896:1986
90.60
Close of review
Sep 3, 2026