| ATTACHMENT METHOD | MOUNTING HOLE | 
| BODY STYLE | WEBBED, SOLID | 
| BORE NOMINAL DIAMETER | 2.999 INCHES BOTH ENDS | 
| BORE STYLE | W/ KEYWAY BOTH ENDS | 
| FACE NOMINAL WIDTH | 2.500 INCHES | 
| HARDNESS RATING | 72.0 ROCKWELL C MINIMUM  AND 9.0 ROCKWELL C MAXIMUM OVERALL | 
| HELIX ANGLE | 14.9167 DEGREES | 
| HUB NOMINAL DIAMETER | 4.500 INCHES FIRST END | 
| HUB NOMINAL DIAMETER | 4.500 INCHES SECOND END | 
| HUB STYLE DESIGNATOR | PLAIN BOTH ENDS | 
| KEYWAY NOMINAL WIDTH | 0.377 INCHES BOTH ENDS | 
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE  AND AISI/SAE 1035 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | 
| MATERIAL | STEEL COMP 1035 OVERALL | 
| PITCH DIAMETER | 16.0000 INCHES NOMINAL | 
| MOUNTING HOLE NOMINAL THREAD SIZE | 0.500 INCHES TRANSVERSELY THROUGH HUB FIRST END | 
| MOUNTING HOLE THREAD QUANTITY PER INCH | 13 TRANSVERSELY THROUGH HUB FIRST END | 
| MOUNTING HOLE THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) TRANSVERSELY THROUGH HUB FIRST END | 
| MOUNTING HOLE TYPE AND QUANTITY | 1 THREADED TRANSVERSELY THROUGH HUB FIRST END | 
| NOMINAL DISTANCE FROM BORE CENTER TO KEYWAY BOTTOM | 1.005 INCHES BOTH ENDS | 
| NOMINAL OUTSIDE DIAMETER | 16.043 INCHES | 
| PRESSURE ANGLE | 20.0000 DEGREES | 
| SPECIAL FEATURES | FIG 2 STAMPED ON GEAR SIDE ON LOWER CTR. LINE OF TOOTH SPACE OPPOSITE KEYWAY,FIG 3 STAMPED ON GEAR SIDE ON CENTER LINE OF TOOTH 150 DEG 45 MIN CCW FROM STAMPED FIG 2 | 
| STYLE DESIGNATOR | FLUSH HUB | 
| TEETH QUANTITY | 80 | 
| TEETH TYPE | SINGLE HELIX | 
| TOOTH DIRECTION | RIGHT | 
| TOOTH FORM | STANDARD |