CATEPILLAR, TURBINE HOUSING, S/ N XEM9002, MATERIAL STEEL, 7. 000 IN. O/ A OD, 1/ 8 IN. FLANGE W, 1/ 4 IN. FLANGE THK, 8-1/ 2 IN. O/ A H, TOP OPENING 1/ 8 IN. THD EXTERNAL, BLADES MAX 1. 500 IN. MIN 1. 250 IN. 3/ 16 IN. THK, CIRCUMFERENCE 3. 500 IN. THK, CIRCUMFERENCE 3. 500 IN. W/ RUBBER RING, MTG HOLES 1/ 4 IN. THD I