| 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 |