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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) | 00-278-7623 (002787623) |
| NCB Code | USA (00) |
| Manufacturer | Caterpillar Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAQL | BODY STYLE | WEBBED,SOLID |
| AGJS | PITCH DIAMETER | 7.0000 INCHES NOMINAL |
| AJLA | TEETH QUANTITY | 56 |
| ANTP | BORE STYLE | W/ KEYWAY BOTH ENDS |
| CQFM | HARDNESS RATING | 82.9 ROCKWELL B MINIMUM AND 96.4 ROCKWELL B MAXIMUM OVERALL |
| CWCD | NOMINAL OUTSIDE DIAMETER | 7.247 INCHES |
| CWNH | TOOTH FORM | STANDARD |
| CWPP | PRESSURE ANGLE | 20.0000 DEGREES |
| CWQL | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.812 INCHES FIRST END |
| CWQR | NOMINAL DISTANCE BETWEEN BODY FACE AND RECESSED HUB END | 0.375 INCHES SECOND END |
| CWRM | FACE NOMINAL WIDTH | 1.000 INCHES |
| CWRS | BORE NOMINAL DIAMETER | 1.250 INCHES BOTH ENDS |
| CWSN | KEYWAY NOMINAL WIDTH | 0.243 INCHES BOTH ENDS |
| CWSR | NOMINAL DISTANCE FROM BORE CENTER TO KEYWAY BOTTOM | 0.741 INCHES BOTH ENDS |
| CWTR | HUB STYLE DESIGNATOR | 2 STEPS FIRST END |
| CWTR | HUB STYLE DESIGNATOR | PLAIN SECOND END |
| CWTX | HUB NOMINAL DIAMETER | 2.125 INCHES SECOND END |
| CWWH | END NOMINAL LENGTH | 0.062 INCHES FIRST END |
| CWWN | END NOMINAL DIAMETER | 1.500 INCHES FIRST END |
| CWWS | FIRST STEP NOMINAL LENGTH | 0.250 INCHES FIRST END |
| CWXB | FIRST STEP NOMINAL DIAMETER | 1.750 INCHES FIRST END |
| CWXG | SECOND STEP NOMINAL LENGTH | 0.499 INCHES FIRST END |
| CWXL | SECOND STEP NOMINAL DIAMETER | 2.125 INCHES FIRST END |
| MATT | MATERIAL | STEEL COMP 1045 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | FED STD 66 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | ONE PROTRUDING HUB,ONE RECESSED HUB |
| Relevant Components for NSN - 3020-00-278-7623, 3020002787623 | ||||
| 3020-01-453-0767 (3020014530767) | 3020-00-488-6478 (3020004886478) | 3040-01-619-0668 (3040016190668) | 3040-01-064-8157 (3040010648157) | |
| 3040-01-272-6698 (3040012726698) | 3040-00-373-3122 (3040003733122) | 3040-01-123-3013 (3040011233013) | 3010-00-317-1201 (3010003171201) | |
| 3020-00-706-8331 (3020007068331) | 3040-01-251-9993 (3040012519993) | 3020-00-832-6414 (3020008326414) | 3040-01-257-4717 (3040012574717) | |
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