| DISTANCE FROM HORIZONTAL CENTERLINE TO CENTER OF LOWER HOLE | 3.000 INCHES NOMINAL |
| APERTURE DIAMETER | 3.960 INCHES NOMINAL |
| COUNTERBORE DEPTH | 1.170 INCHES NOMINAL |
| COUNTERBORE DIAMETER | 4.5206 INCHES MINIMUM AND 4.5220 INCHES MAXIMUM |
| COUNTERSINK ANGLE | 85.0 DEGREES MINIMUM AND 95.0 DEGREES MAXIMUM |
| COUNTERSINK DIAMETER | 0.400 INCHES MINIMUM AND 0.440 INCHES MAXIMUM |
| CROSS-SECTIONAL SHAPE STYLE | RAISED SURFACE W/APERTURE |
| DISTANCE BETWEEN HOLES ALONG WIDTH | 6.000 INCHES NOMINAL |
| HARDNESS RATING | 70.0 BRINELL STANDARD MINIMUM AND 90.0 BRINELL STANDARD MAXIMUM |
| LUG QUANTITY | 1 |
| LUG WIDTH | 0.880 INCHES NOMINAL |
| OUTSIDE DIAMETER | 6.750 INCHES NOMINAL |
| OUTSIDE RAISED SURFACE DIAMETER | 5.125 INCHES MINIMUM AND 5.126 INCHES MAXIMUM |
| OVERALL THICKNESS | 1.310 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE J453,GRADE 322-T71 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | ALUMINUM ALLOY 355.0 OVERALL |
| MINOR THICKNESS | 0.140 INCHES NOMINAL |
| MOUNTING HOLE ARRANGEMENT STYLE | VERTICAL CENTERLINE |
| MOUNTING HOLE TYPE | ROUND, THREADED, COUNTERSUNK |
| NOMINAL THREAD SIZE | 0.375 INCHES |
| RAISED SURFACE HEIGHT | 0.390 INCHES MINIMUM AND 0.430 INCHES MAXIMUM |
| RADIUS FROM CENTER OF PLATE TO END OF LUG | 3.560 INCHES NOMINAL |
| SPECIAL FEATURES | SECOND RAISED SURFACE BACKFACE,5.000 IN. DIA,0.360 IN. HIGH; TWELVE THRU HOLES IN FLANGE,0.414 IN. DIA,ON 6.000 IN. DIA BOLT CIRCLE; ONE BLIND HOLE IN LUG ON BACKFACE,0.320 IN. DIA,0.160 IN. SPHERICAL R DEPTH,0.094 IN. DIA THRU HOLE AT 48.0 DEG 30.0 MINUTE ANGLE TO FRONT FLANGE OD; REDUCED OD OF FLANGE,UPPER RIGHT QUADRANT,2.770 IN. R |
| STYLE DESIGNATOR | ROUND WITH LUGS |
| THREAD QUANTITY PER INCH | 16 |
| THREAD SERIES DESIGNATOR | UNC |