EN-4634 Complete Document History
Aerospace Series - Screws, 100 Degrees Countersunk Head, Six Lobe Recess, Short Thread

Complete Current Edition:
   2011 EDITION - ONLY AVAILABLE IN NATIONAL EDITIONS - Jan. 1, 2011

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