| MATERIAL | STEEL COMP 8640 AND |
| STEEL COMP 8740 AND |
| STEEL COMP 4140 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| HARDNESS RATING | 28.0 ROCKWELL C MINIMUM AND |
| 32.0 ROCKWELL C MAXIMUM OVERALL |
| TEETH QUANTITY | 24 |
| TEETH TYPE | SINGLE HELIX |
| TOOTH FORM | STANDARD |
| TOOTH DIRECTION | LEFT |
| PRESSURE ANGLE | 14.5000 DEGREES |
| HELIX ANGLE | 34.6284 DEGREES |
| STYLE DESIGNATOR | ONE FLUSH HUB, ONE RECESSED HUB |
| PITCH DIAMETER | 2.8970 INCHES NOMINAL |
| NOMINAL OUTSIDE DIAMETER | 3.122 INCHES |
| FACE NOMINAL WIDTH | 1.375 INCHES |
| NOMINAL DISTANCE BETWEEN BODY FACE AND RECESSED HUB END | 0.375 INCHES SECOND END |
| BORE STYLE | W/ KEYWAY BOTH ENDS |
| BORE NOMINAL DIAMETER | 0.560 INCHES BOTH ENDS |
| KEYWAY NOMINAL WIDTH | 0.127 INCHES BOTH ENDS |
| NOMINAL DISTANCE FROM BORE CENTER TO KEYWAY BOTTOM | 0.347 INCHES BOTH ENDS |
| HUB STYLE DESIGNATOR | PLAIN BOTH ENDS |
| HUB NOMINAL DIAMETER | 1.125 INCHES FIRST END |
| 1.125 INCHES SECOND END |
| BODY STYLE | WEBBED, OFFSET, SOLID |
| ATTACHMENT METHOD | MOUNTING HOLE |
| MOUNTING HOLE TYPE AND QUANTITY | 2 THREADED AXIALLY THROUGH BODY, FIRST END |
| MOUNTING HOLE THREAD SERIES DESIGNATOR | UNC AXIALLY THROUGH BODY, FIRST END |
| MOUNTING HOLE NOMINAL THREAD SIZE | 0.375 INCHES AXIALLY THROUGH BODY, FIRST END |
| BOLT HOLE CIRCLE NOMINAL DIAMETER | 1.688 INCHES AXIALLY THROUGH BODY, FIRST END |
| SPECIAL FEATURES | WEAPON SYSTEM ESSENTIAL |
| CRITICALITY CODE JUSTIFICATION | FEAT |
| THE MANUFACTURERS DATA | |
| MANUFACTURERS CODE | 14351 |
| DESIGN CONTROL REFERENCE | R600H329 |