EN-4161 Complete Document History
Aerospace Series - Screws, Pan Head, Offset Cruciform Recess, Coarse Tolerance Normal

Complete Current Edition:
   2010 EDITION - ONLY AVAILABLE IN NATIONAL EDITIONS - Jan. 1, 2010

Obsolete Revision Information:
   2009 EDITION - ONLY AVAILABLE IN NATIONAL EDITIONS - Jan. 1, 2009