"BRONZE ALUMINUM QQ-B-679 COMP 2,3.250 IN. O/A DIA,1.500 IN. O/A H,2.5000 IN. MIN TO 2.5011 IN. MAX DIA BORE THRU,0.250-16 NS-3A THDS 0.630 IN. LG,12 SLOTS EQUALLY SPACED 0.156 IN. MIN TO 0.166 IN. MAX W 0.925 IN. DP,MACHINED SURFACES 100.0 MICROINCH FINISH"