GENERAL CHARACTERISTICS ITEM DESCRIPTION | TUBING,STEEL,4130,ANNEALED,TYPE I,SEAMLESS,SPEC MIL-T-6736; 1.524 MAX IN. OUTSIDE DIA; 1.310 MAX IN. INSIDE DIA; 1.375 MAX IN. LONG; HEAT TREAT TO ROCKWELL C SCALE 42 TO 45 IN ACCORD WITH SPEC MIL-H-6875; ADAPTER USED ON 8 IN. PROJECTILE M509 |