| CENTER HOLE SHAPE STYLE | ROUND |
| CORNER SHAPE | SQUARE FIRST INSIDE CORNER |
| CORNER SHAPE | SQUARE FIRST OUTSIDE CORNER |
| CORNER SHAPE | SQUARE FOURTH OUTSIDE CORNER |
| CORNER SHAPE | SQUARE SECOND INSIDE CORNER |
| CORNER SHAPE | SQUARE SECOND OUTSIDE CORNER |
| CORNER SHAPE | SQUARE THIRD OUTSIDE CORNER |
| CROSS-SECTIONAL SHAPE STYLE | SHOULDERED |
| DIAMETER | 0.7880 INCHES MINIMUM AND 0.7900 INCHES MAXIMUM |
| FLANGE THICKNESS | 0.0976 INCHES MINIMUM AND 0.0996 INCHES MAXIMUM |
| HARDNESS RATING | 58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM OVERALL |
| OVERALL THICKNESS | 0.1026 INCHES MINIMUM AND 0.1046 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-7420 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| OUTSIDE DIAMETER | 1.6260 INCHES MINIMUM AND 1.6360 INCHES MAXIMUM |
| SHANK OUTSIDE DIAMETER | 1.3900 INCHES MINIMUM AND 1.4100 INCHES MAXIMUM |
| SPECIAL FEATURES | LEFT SIDE AND RIGHT FACE OF FLANGE PARALLEL WITHIN 0.0002 IN. TOTAL INDICATORREADING |
| STYLE DESIGNATOR | ROUND |
| SURFACE FINISH | 10.0 MICROINCHES LEFT SIDE |
| SURFACE FINISH | 210.0 MICROINCHES RIGHT SIDE |