| MATERIAL | ALUMINUM ALLOY 6061 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-200/8A FED SPEC SINGLE MATERIAL RESPONSE OR |
| QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | ANODIZE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| STYLE DESIGNATOR | ROUND |
| OUTSIDE DIAMETER | 3.750 INCHES NOMINAL |
| CROSS-SECTIONAL SHAPE STYLE | FLAT W/APERTURE |
| APERTURE DIAMETER | 1.375 INCHES NOMINAL |
| OVERALL THICKNESS | 1.000 INCHES NOMINAL |
| MOUNTING HOLE TYPE | ROUND, UNTHREADED, COUNTERBORED |
| MOUNTING HOLE DIAMETER | 0.563 INCHES NOMINAL |
| COUNTERBORE DEPTH | 0.625 INCHES NOMINAL |
| COUNTERBORE DIAMETER | 0.875 INCHES NOMINAL |
| MOUNTING HOLE ARRANGEMENT STYLE | SINGLE BOLT HOLE CIRCLE |
| BOLT CIRCLE HOLE QUANTITY | 4 |
| MOUNTING BOLT CIRCLE DIAMETER | 2.375 INCHES NOMINAL |
| SPECIAL FEATURES | 0.125 IN. R ON OD CORNER,FRONT FACE; 0.250 IN. R ON ID CORNER FRONT FACE; BACKFACE ID CORNER CHAMFER 0.0625 IN. LONG BY 45.0 DEG |