| GENERAL CHARACTERISTICS ITEM DESCRIPTION | STEEL 4140 SUBSTITUTE OD 8853 TY D GRADE 1 CL C ALT QQ-S-6244140,9.938 IN. O-A LG,10.438 IN. O-A W,2.000 IN. O-A THK,250ARITHMETICAL AVERAGE SURFACE FINISH,HEAT TREATED 38-42 ROCKWELL CBY MARTEMPERING PROCESS,MAGNETIC PARTICLE INSPECT PER MIL-I-6868,PROTECTIVE COAT PER MIL-P-16232 TY M CL 1,FINISH COAT FAYINGSURFACES WITH CL 2 SUPPLEMENTARY FINISH,FINISH COAT ALL NONFAYINGSURFACES PER PAINT SYSTEM 37 LIGHT GRAY,HEAT TREAT PER WS 13554 |