| ATTACHMENT METHOD | MOUNTING HOLE |
| BACKLASH DESIGNATION | GRADE A |
| BODY STYLE | PLAIN, SOLID |
| BORE NOMINAL DIAMETER | 1.714 INCHES BOTH ENDS |
| BORE STYLE | INVOLUTE SPLINE BOTH ENDS |
| FACE NOMINAL WIDTH | 1.580 INCHES |
| HARDNESS RATING | 35.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| HUB STYLE DESIGNATOR | PLAIN BOTH ENDS |
| HUB NOMINAL DIAMETER | 2.140 INCHES FIRST END |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A332 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A331 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4140 OR STEEL COMP 8640 OVERALL |
| MOUNTING HOLE TYPE AND QUANTITY | 2 THREADED AXIALLY THROUGH FLANGE |
| MOUNTING HOLE NOMINAL THREAD SIZE | 0.458 INCHES AXIALLY THROUGH FLANGE |
| MOUNTING HOLE THREAD SERIES DESIGNATOR | UNF AXIALLY THROUGH FLANGE |
| NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.645 INCHES FIRST END |
| NOMINAL OUTSIDE DIAMETER | 6.090 INCHES |
| NOMINAL OVERALL LENGTH | 2.530 INCHES |
| NOMINAL WIDTH ACROSS FLATS | 4.250 INCHES BETWEEN BODY AND FLANGE |
| PITCH DIAMETER | 5.4545 INCHES NOMINAL |
| PRECISION CLASSIFICATION | QUALITY NUMBER 8 |
| PRESSURE ANGLE | 20.0000 DEGREES |
| SPLINE PITCH DIAMETER | 1.6250 INCHES NOMINAL BOTH ENDS |
| SPLINE QUANTITY | 39 BOTH ENDS |
| STYLE DESIGNATOR | SOLID BACK RING, PROTRUDING HUB, RECESSED HUB |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-STD-171 FN5.3.2.2 MIL STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PHOSPHATE ZINC OVERALL |
| TEETH QUANTITY | 90 |
| TEETH TYPE | SPUR |
| TOOTH FORM | STANDARD |