ISO 6624-4:2016Published

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

A new edition is under development: ISO/CD 6624-4.

Abstract / scope

ISO 6624-4:2016 specifies the essential dimensional features of half keystone rings made of steel, types HK, HKB and HKBA, having nominal diameters from 50 mm up to, and including, 160 mm, used in reciprocating internal combustion piston engines for road vehicles and other applications.

Life cycle

Replaces

ISO 6624-4:2003WithdrawnInternal combustion engines — Piston rings — Part 4: Half keystone rings made of steelInternational Standard · Published 1 Oct 2003 · ISO/TC 22/SC 34

Replaced by

ISO/WD 6624-4Deleted (project abandoned)Internal combustion engines — Piston rings — Part 4: Half keystone rings made of steelInternational Standard · ISO/TC 22/SC 34 ISO/CD 6624-4Under developmentInternal combustion engines — Piston rings — Part 4: Half keystone rings made of steelInternational Standard · ISO/TC 22/SC 34