| APERTURE DIAMETER | 1.187 INCHES NOMINAL |
| APERTURE TYPE | COUNTERBORED |
| APERTURE SHAPE | ROUND |
| COUNTERBORE DIAMETER | 1.265 INCHES NOMINAL1.265 INCHES NOMINAL |
| COUNTERBORE DEPTH | 0.188 INCHES NOMINAL0.188 INCHES NOMINAL |
| FEATURES PROVIDED | APERTURE AND RAISED SURFACE |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-596,CL 7,COND F FED SPEC SINGLE MATERIAL RESPONSE |
| MATERIAL | ALUMINUM ALLOY |
| MOUNTING HOLE DIAMETER | 0.112 INCHES NOMINAL THIRD HOLE |
| MOUNTING HOLE DIAMETER | 0.127 INCHES MINIMUM AND 0.128 INCHES MAXIMUM SECOND HOLE |
| MOUNTING HOLE DIAMETER | 0.156 INCHES NOMINAL FIRST HOLE |
| MOUNTING HOLE DIAMETER | 0.170 INCHES MINIMUM AND 0.177 INCHES MAXIMUM FOURTH HOLE |
| MOUNTING HOLE DIAMETER | 0.375 INCHES NOMINAL ALL HOLES |
| MOUNTING HOLE QUANTITY | 23 |
| MOUNTING HOLE TYPE | THREADED AND UNTHREADED |
| RAISED SURFACE DIAMETER | 1.437 INCHES MINIMUM AND 1.439 INCHES MAXIMUM |
| RAISED SURFACE HEIGHT | 1.031 INCHES NOMINAL |
| SCREW THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| SHAPE | RECTANGULAR |
| THICKNESS | 0.188 INCHES NOMINAL0.188 INCHES NOMINAL |
| THREAD SIZE | 4-40 OR 4-32 |