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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) | 00-278-6645 (002786645) |
| NCB Code | USA (00) |
| Manufacturer | Allison Transmission Inc, General Motors Corp |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAQL | BODY STYLE | WEBBED,OFFSET,SOLID |
| ABSX | ATTACHMENT METHOD | MOUNTING HOLE |
| AGJS | PITCH DIAMETER | 8.6667 INCHES NOMINAL |
| AJLA | TEETH QUANTITY | 52 |
| ANTP | BORE STYLE | W/COUNTERBORE BOTH ENDS |
| CQFM | HARDNESS RATING | 60.0 ROCKWELL C NOMINAL OVERALL |
| CTQY | MOUNTING HOLE TYPE AND QUANTITY | 12 COUNTERBORED AXIALLY THROUGH HUB,FIRST END |
| CWCD | NOMINAL OUTSIDE DIAMETER | 9.012 INCHES |
| CWNH | TOOTH FORM | STANDARD |
| CWPP | PRESSURE ANGLE | 25.0000 DEGREES |
| CWQL | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.178 INCHES FIRST END |
| CWQR | NOMINAL DISTANCE BETWEEN BODY FACE AND RECESSED HUB END | 0.424 INCHES SECOND END |
| CWRM | FACE NOMINAL WIDTH | 1.022 INCHES |
| CWRS | BORE NOMINAL DIAMETER | 4.188 INCHES BOTH ENDS |
| CWTB | COUNTERBORE NOMINAL DEPTH | 0.300 INCHES FIRST END |
| CWTG | COUNTERBORE NOMINAL DIAMETER | 5.400 INCHES FIRST END |
| CWTR | HUB STYLE DESIGNATOR | PLAIN BOTH ENDS |
| CWTX | HUB NOMINAL DIAMETER | 4.595 INCHES SECOND END |
| CWTX | HUB NOMINAL DIAMETER | 7.687 INCHES FIRST END |
| CWZK | MOUNTING HOLE NOMINAL DIAMETER | 0.416 INCHES AXIALLY THROUGH FLANGE |
| CWZN | BOLT HOLE CIRCLE NOMINAL DIAMETER | 7.060 INCHES AXIALLY THROUGH HUB,FIRST END |
| MATT | MATERIAL | STEEL COMP 8620 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-13048 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | ONE PROTRUDING HUB,ONE RECESSED HUB |
| Relevant Components for NSN - 3020-00-278-6645, 3020002786645 | ||||
| 3020-00-239-0219 (3020002390219) | 3040-01-281-4427 (3040012814427) | 3040-01-281-4493 (3040012814493) | 3010-01-408-2574 (3010014082574) | |
| 3020-01-050-1279 (3020010501279) | 3020-01-231-7121 (3020012317121) | 3040-01-392-9012 (3040013929012) | 3020-00-734-5084 (3020007345084) | |
| 3020-01-292-4445 (3020012924445) | 3040-01-090-0310 (3040010900310) | 3040-01-661-3244 (3040016613244) | 3040-01-396-1927 (3040013961927) | |
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