| BOLT CIRCLE DIAMETER | 16.995 INCHES MINIMUM AND 17.005 INCHES MAXIMUM |
| BORE DIAMETER | 15.625 INCHES NOMINAL |
| BORE LENGTH | 0.548 INCHES MINIMUM AND 0.568 INCHES MAXIMUM |
| BORE TYPE | STRAIGHT |
| COUNTERBORE DEPTH | 0.437 INCHES MINIMUM AND 0.447 INCHES MAXIMUM |
| COUNTERBORE DIAMETER | 18.000 INCHES MINIMUM AND 18.005 INCHES MAXIMUM |
| COUNTERBORE LOCATION | AA END |
| DESIGN FORM | WEBBED |
| DRILLED HOLE DIAMETER | 0.515 INCHES MINIMUM AND 0.516 INCHES MAXIMUM |
| FACE WIDTH | 0.995 INCHES MINIMUM AND 1.005 INCHES MAXIMUM |
| FURNISHED ITEMS | COUNTERBORE |
| HARDNESS RATING TEST METHOD | ROCKWELL |
| HOLE LOCATION | ON FACE |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-624, FS4145-CANCELED FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-624, FS4150-CANCELED FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-624, FS8650-CANCELED FED SPEC 3RD MATERIAL RESPONSE OR QQ-S-624, COMP FS8645-CANCELED FED SPEC 4TH MATERIAL RESPONSE OR QQ-S-624, FS8750-CANCELED FED SPEC 5TH MATERIAL RESPONSE OR QQ-W-428,COND B FED SPEC 6TH MATERIAL RESPONSE |
| PITCH DIAMETER | 24.5309 INCHES MINIMUM AND 24.5619 INCHES MAXIMUM |
| MATERIAL | STEEL COMP 4145 OR STEEL COMP 4150 OR STEEL COMP 8650 OR STEEL COMP 8645 OR STEEL COMP 8750 OR STEEL |
| METALLIC HARDNESS RATING AND LOCATION | 55.0 ROCKWELL C MINIMUM BODY AND 60.0 ROCKWELL C MAXIMUM BODY |
| OUTSIDE DIAMETER | 26.687 INCHES NOMINAL |
| SECURING HOLE QUANTITY | 14 |
| SECURING LOCATION | BB END |
| SECURING METHOD | DRILLED HOLE |
| SPECIAL FEATURES | 4-1/2 IN. RADIUS OF TEETH, TANGENT TO FACE AT PITCH DIA ON AA END |
| STYLE DESIGNATOR | WEBBED OR SPOKED |
| TAPERED HOLE SIZE | 0.515 TO 0.516 |
| TEETH HARDNESS RATING | 55.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM |
| TEETH QUANTITY PER ROW | 14 |
| TEETH ROW QUANTITY | 1 |
| TOOTH PITCH | 3.000 INCHES NOMINAL |