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ISO 6624-4:2003Withdrawn

Internal combustion engines — Piston rings — Part 4: Half keystone rings made of steel

Moteurs à combustion interne — Segments de piston — Partie 4: Segments semi-trapézoïdaux en acier

This edition has been replaced by ISO 6624-4:2016.

Abstract / scope

ISO 6624-4:2003 specifies the essential dimensional features of half keystone rings made of steel, types HK and HKB, having diameters of from 38 mm up to and including 160 mm, used in reciprocating internal combustion piston engines.

Life cycle

Replaced by

ISO 6624-4:2016PublishedInternal combustion engines — Piston rings — Part 4: Half keystone rings made of steelInternational Standard · Published 18 Feb 2016 · ISO/TC 22/SC 34