| APERTURE DIAMETER | 3.300 INCHES MINIMUM AND 3.340 INCHES MAXIMUM |
| BOLT CIRCLE HOLE QUANTITY | 8 |
| COUNTERSINK DIAMETER | 0.382 INCHES MINIMUM AND 0.402 INCHES MAXIMUM |
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| CROSS-SECTIONAL SHAPE STYLE | FLAT W/APERTURE |
| HARDNESS RATING | 30.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4130 OVERALL |
| PROPRIETARY CHARACTERISTICS | PACS |
| MOUNTING BOLT CIRCLE DIAMETER | 4.200 INCHES NOMINAL |
| MOUNTING HOLE ARRANGEMENT STYLE | SINGLE BOLT HOLE CIRCLE |
| MOUNTING HOLE DIAMETER | 0.218 INCHES MINIMUM AND 0.231 INCHES MAXIMUM |
| MOUNTING HOLE TYPE | ROUND, UNTHREADED |
| OUTSIDE DIAMETER | 4.720 INCHES NOMINAL |
| OVERALL THICKNESS | 0.125 INCHES NOMINAL |
| SPECIAL FEATURES | MOUNTING HOLES COUNTERSUNK 0.392 IN. DIA BY 100 DEG ONE SIDE |
| STYLE DESIGNATOR | ROUND |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | DOD-P-16232,TYPE M,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PHOSPHATE MANGANESE OVERALL |