| APERTURE DIAMETER | 2.953 INCHES NOMINAL |
| COUNTERBORE DEPTH | 0.405 INCHES MINIMUM AND 0.430 INCHES MAXIMUM |
| COUNTERBORE DIAMETER | 2.680 INCHES MINIMUM AND 2.720 INCHES MAXIMUM |
| CROSS-SECTIONAL SHAPE STYLE | COUNTERBORED W/ APERTURE |
| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| MATERIAL | STEEL COMP 4340 OVERALL |
| MINOR THICKNESS | 0.070 INCHES NOMINAL |
| MOUNTING HOLE DIAMETER | 0.296 INCHES MINIMUM AND 0.303 INCHES MAXIMUM |
| MOUNTING HOLE TYPE | ROUND, UNTHREADED |
| OUTSIDE DIAMETER | 3.360 INCHES MINIMUM AND 3.380 INCHES MAXIMUM |
| OVERALL THICKNESS | 0.475 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |
| SPECIAL FEATURES | FOUR TABS 0.660 IN. MIN 0.700 IN. MAX LOCATED ON 4.440 DBC;MAGNETIC PARTICLE INSP PER AMS-2640;PERSONNEL QUALIFICATION PER MIL STD 410 REQD;PROCESS SHALL BE FLUORESCENT AND CONTINUOUS WITH 5 GAUSS MAX RESIDUAL MAGNETISM ALLOWED |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS-2485 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | OXIDE OVERALL |