"CONSISTS FSCM 19207,PART NO. 8350934 HAVING 29 HOLES SPACED APART AROUND ENDG OF ITEM 19 IN. DIA.DRILL-ED THRU .531IN. DIA.;6 HOLES IN HOUSING TAP 1/2-13 UNC-28 THD THRU COUNTER- SUNK AT 90 DEG OR COUNTERDRILLED;FINALPROTECTIVE FINISH LEAD PLATE TYPE I CLASS 2"