HB 1-157-1983
Short thread cross recessed 120° countersunk head bolts (English Version)

Standard No.

HB 1-157-1983

Language

Chinese, Available in English version

Published By

Professional Standard - Aviation

Status

Be replaced 1996-01

Replace By

HB 1-157-1995

Latest

HB 1-157-2002

HB 1-157-1983 history

• 2003 HB 1-157-2002 120°raised countersunk head bolts with cross recess,short thread
• 1995 HB 1-157-1995 Short thread cross recessed 120° countersunk head bolts
• 1970 HB 1-157-1983 Short thread cross recessed 120° countersunk head bolts
• 1970 HB 1-157-1977 Cross recessed 120° countersunk head bolts