"ALUMINUM ALLOY 356-T6,AMS 4260,4.000 IN. LG O/A,1ST END DATA,0.940 IN. HEX 0.250 IN. THK,5/8-18 UNF 3B THD PER MIL-S-7742,0.500 IN. LG,CENTER SHANK DATA,0.875 IN. OD,0.760 IN. ID,2.180 IN. DEEP FROM FLARED END,2ND END DATA,ELONGATED FLARE,1 EA THROUGH HOLE 0.251 IN. DIA,0.250 IN. FROM END,SIDE FLANGES"