| MATERIAL DOCUMENT AND CLASSIFICATION | AISI 4130 ASSN STD SINGLE MATERIAL RESPONSE | 
| MATERIAL | STEEL COMP 4130 | 
| SPECIAL FEATURES | 1.500 IN. O/A DIA; 0.250 IN. NOM H | 
| SUPPORTING OBJECT/SURFACE ATTACHMENT METHOD | 4 HOLES 0.156 IN. MIN,0.162 IN. MAX DIA ON A 1.250 IN. DIA | 
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | DOD-P-16233,TY M,CL 3 MIL SPEC SINGLE TREATMENT RESPONSE | 
| SURFACE TREATMENT | PHOSPHATE MANGANESE |