Abstract 

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.


General information

  • Status :  Withdrawn
    Publication date : 2003-10
  • Edition : 1
    Number of pages : 18
  • :
    ISO/TC 22/SC 34
    Propulsion, powertrain and powertrain fluids
  • 43.060.10
    Engine block and internal components

Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)

Keep up to date with ISO

Sign up to our newsletter for the latest news, views and product information