| SHAPE | ROUND |
| MATERIAL | STEEL COMP 303 OR |
| STEEL COMP 304 |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763, COMP 303 FED SPEC 1ST MATERIAL RESPONSE OR |
| QQ-S-766, CLASS 304 FED SPEC 2ND MATERIAL RESPONSE |
| OUTSIDE DIAMETER | 17.740 INCHES MINIMUM AND |
| 17.760 INCHES MAXIMUM |
| THICKNESS | 0.875 INCHES MINIMUM AND |
| 0.890 INCHES MAXIMUM |
| APERTURE SHAPE | ROUND |
| APERTURE DIAMETER | 7.3125 INCHES NOMINAL |
| APERTURE TYPE | COUNTERBORED |
| COUNTERBORE DEPTH | 0.250 INCHES NOMINAL |
| COUNTERBORE DIAMETER | 7.781 INCHES NOMINAL |
| MOUNTING HOLE QUANTITY | 5 |
| 12 |
| 6 |
| 10 |
| 3 |
| 4 |
| MOUNTING HOLE DIAMETER | 0.164 INCHES NOMINAL ALL HOLES |
| 0.266 INCHES NOMINAL FIRST HOLE |
| 0.190 INCHES NOMINAL SECOND HOLE |
| 0.500 INCHES NOMINAL THIRD HOLE |
| 0.312 INCHES NOMINAL FOURTH HOLE |
| 0.250 INCHES NOMINAL FIFTH HOLE |
| MOUNTING HOLE TYPE | THREADED AND |
| UNTHREADED |
| THREAD SIZE | 8-32 OR |
| 10-32 OR |
| 0.500-32 OR |
| 0.312-32 OR |
| 0.250-32 |
| SCREW THREAD SERIES DESIGNATOR | UNC OR |
| UNF |
| FEATURES PROVIDED | APERTURE |