| APERTURE DIAMETER | 2.170 INCHES MINIMUM AND 2.180 INCHES MAXIMUM |
| BOLT CIRCLE HOLE QUANTITY | 2 |
| HARDNESS RATING | 28.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM |
| OUTSIDE DIAMETER | 3.300 INCHES MINIMUM AND 3.360 INCHES MAXIMUM |
| OVERALL THICKNESS | 0.125 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-18729 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OR AMS 6415 ASSN STD 3RD MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4130 OR STEEL COMP E4340 OR STEEL COMP 4340 OVERALL |
| MOUNTING BOLT CIRCLE DIAMETER | 2.940 INCHES NOMINAL |
| MOUNTING HOLE DIAMETER | 0.192 INCHES MINIMUM AND 0.205 INCHES MAXIMUM |
| MOUNTING HOLE ARRANGEMENT STYLE | SINGLE BOLT HOLE CIRCLE |