| MATERIAL | STEEL CORROSION RESISTING OVERALL | 
| HARDNESS RATING | 35.0 ROCKWELL C MINIMUM AND | 
|  | 43.0 ROCKWELL C MAXIMUM | 
| HOLE DIAMETER | 12.50 MILLIMETERS MINIMUM AND | 
|  | 12.65 MILLIMETERS MAXIMUM | 
| OUTSIDE DIAMETER | 20.50 MILLIMETERS MINIMUM AND | 
|  | 20.68 MILLIMETERS MAXIMUM | 
| MATERIAL THICKNESS | 0.94 MILLIMETERS MINIMUM AND | 
|  | 1.06 MILLIMETERS MAXIMUM | 
| SPEC/STD CONTROLLING DATA |  | 
| MANUFACTURERS CODE | 81349 | 
| DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | D70336/3-52 |