HB 242-1970
Clearance screw thread (English Version)

Standard No.

HB 242-1970

Language

Chinese, Available in English version

Published By

Professional Standard - Aviation

Status

Be replaced

Replace By

HB 242-2007

Latest

HB 242-2007

Replace

HB 242-1964

Scope

This standard only stipulates external threads, and the matching internal threads are manufactured according to HB241-70 standards. It is allowed to match any precision internal thread in the HB241-70 standard. This standard applies to threaded connections with metal coating or working under high temperature conditions.

HB 242-1970 history

• 1970 HB 242-2007 High voltage mining equipment for use underground
• 1970 HB 242-1970 Clearance screw thread
• 0000 HB 242-1964