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| Item Name | Gear Helical |
| Federal Supply Group (FSG) | Mechanical Power Transmission Equipment |
| Federal Supply Class (FSC) | 3020 Gear Pulley Sprocket and Transmission Chain |
| National Item Identification Number (NIIN) | 01-060-4178 (010604178) |
| NCB Code | USA (01) |
| Manufacturer | Raytheon Company |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAQL | BODY STYLE | WEBBED,SOLID |
| ABSA | SPLINE QUANTITY | 13 BOTH ENDS |
| ABSX | ATTACHMENT METHOD | MOUNTING HOLE |
| AGJS | PITCH DIAMETER | 2.6490 INCHES NOMINAL |
| AJLA | TEETH QUANTITY | 41 |
| ANTP | BORE STYLE | INVOLUTE SPLINE BOTH ENDS |
| BDTX | SPLINE PITCH DIAMETER | 0.8125 INCHES NOMINAL BOTH ENDS |
| CMLK | MOUNTING HOLE THREAD SERIES DESIGNATOR | UNC TRANSVERSELY THROUGH HUB,FIRST END |
| CQFM | HARDNESS RATING | 38.0 ROCKWELL C MINIMUM OVERALL AND 42.0 ROCKWELL C MAXIMUM OVERALL |
| CQLT | MOUNTING HOLE NOMINAL THREAD SIZE | 0.138 INCHES TRANSVERSELY THROUGH HUB,FIRST END |
| CTQY | MOUNTING HOLE TYPE AND QUANTITY | 3 THREADED TRANSVERSELY THROUGH HUB,FIRST END |
| CWCD | NOMINAL OUTSIDE DIAMETER | 2.773 INCHES |
| CWMW | TEETH TYPE | SINGLE HELIX |
| CWNH | TOOTH FORM | STUB |
| CWNM | TOOTH DIRECTION | RIGHT |
| CWPP | PRESSURE ANGLE | 20.0000 DEGREES |
| CWPZ | HELIX ANGLE | 14.7000 DEGREES |
| CWQL | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.242 INCHES SECOND END |
| CWRM | FACE NOMINAL WIDTH | 0.945 INCHES |
| CWRS | BORE NOMINAL DIAMETER | 0.943 INCHES BOTH ENDS |
| CWTB | COUNTERBORE NOMINAL DEPTH | 0.4300 INCHES SECOND END |
| CWTR | HUB STYLE DESIGNATOR | PINNED SECOND END |
| CWTR | HUB STYLE DESIGNATOR | PLAIN FIRST END |
| CWTX | HUB NOMINAL DIAMETER | 1.500 INCHES FIRST END |
| CWTX | HUB NOMINAL DIAMETER | 1.500 INCHES SECOND END |
| CWWK | PRECISION CLASSIFICATION | QUALITY NUMBER 12 |
| FEAT | SPECIAL FEATURES | COUNTERBORE SECOND END,DIA. 0.877 IN. NOMINAL,DEPTH 0.430 IN. NOMINAL |
| MATT | MATERIAL | STEEL OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5626,COND D MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | OXIDE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | PROTRUDING HUBS |
| Relevant Components for NSN - 3020-01-060-4178, 3020010604178 | ||||
| 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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