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| Item Name | Gear Spur |
| Federal Supply Group (FSG) | Mechanical Power Transmission Equipment |
| Federal Supply Class (FSC) | 3020 Gear Pulley Sprocket and Transmission Chain |
| National Item Identification Number (NIIN) | 00-770-7493 (007707493) |
| NCB Code | USA (00) |
| Manufacturer | General Motors Corp, Allison Transmission Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABSX | ATTACHMENT METHOD | MOUNTING HOLE |
| ANTP | BORE STYLE | INVOLUTE SPLINE BOTH ENDS |
| BDTX | SPLINE PITCH DIAMETER | 1.2500 INCHES NOMINAL BOTH ENDS |
| CWCD | NOMINAL OUTSIDE DIAMETER | 7.171 INCHES |
| CWNH | TOOTH FORM | STANDARD |
| CWPP | PRESSURE ANGLE | 25.0000 DEGREES |
| CWQL | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.521 INCHES FIRST END |
| CWQR | NOMINAL DISTANCE BETWEEN BODY FACE AND RECESSED HUB END | 0.333 INCHES SECOND END |
| CWRS | BORE NOMINAL DIAMETER | 1.342 INCHES BOTH ENDS |
| CWTB | COUNTERBORE NOMINAL DEPTH | 0.094 INCHES FIRST END |
| CWTG | COUNTERBORE NOMINAL DIAMETER | 1.468 INCHES FIRST END |
| CWTR | HUB STYLE DESIGNATOR | PLAIN BOTH ENDS |
| CWZK | MOUNTING HOLE NOMINAL DIAMETER | 0.250 INCHES AXIALLY THROUGH BODY,FIRST END |
| CWZN | BOLT HOLE CIRCLE NOMINAL DIAMETER | 3.125 INCHES AXIALLY THROUGH BODY,FIRST END |
| STYL | STYLE DESIGNATOR | ONE PROTRUDING HUB,ONE RECESSED HUB |
| CWRM | FACE NOMINAL WIDTH | 0.896 INCHES |
| CWTX | HUB NOMINAL DIAMETER | 1.656 INCHES SECOND END |
| CWTX | HUB NOMINAL DIAMETER | 4.500 INCHES FIRST END |
| MATT | MATERIAL | STEEL COMP 8620H OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| AAQL | BODY STYLE | WEBBED,OFFSET,WITH LIGHTENING HOLES |
| ABSA | SPLINE QUANTITY | 20 BOTH ENDS |
| AGJS | PITCH DIAMETER | 6.8333 INCHES NOMINAL |
| AJLA | TEETH QUANTITY | 41 |
| CQFM | HARDNESS RATING | 60.0 ROCKWELL C NOMINAL OVERALL |
| CTQY | MOUNTING HOLE TYPE AND QUANTITY | 3 PLAIN TRANSVERSELY THROUGH FACE |
| Relevant Components for NSN - 3020-00-770-7493, 3020007707493 | ||||
| 3040-99-750-9441 (3040997509441) | 3040-01-309-9880 (3040013099880) | 3020-00-056-1680 (3020000561680) | 3040-01-592-1774 (3040015921774) | |
| 3040-01-340-6053 (3040013406053) | 3040-01-424-7637 (3040014247637) | 3020-00-762-8849 (3020007628849) | 3040-01-411-4890 (3040014114890) | |
| 3020-01-163-7221 (3020011637221) | 3030-00-041-2888 (3030000412888) | 3030-00-421-7151 (3030004217151) | 3040-01-256-3453 (3040012563453) | |
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