AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| 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) | 00-234-3990 (002343990) |
| NCB Code | USA (00) |
| Manufacturer | Avtron Aerospace Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAQL | BODY STYLE | WEBBED,OFFSET,SOLID |
| ABSX | ATTACHMENT METHOD | MOUNTING HOLE |
| AGJS | PITCH DIAMETER | 10.5500 INCHES NOMINAL |
| AJLA | TEETH QUANTITY | 103 |
| ANTP | BORE STYLE | W/ KEYWAY BOTH ENDS |
| CMLK | MOUNTING HOLE THREAD SERIES DESIGNATOR | UNC AXIALLY THROUGH BODY,FIRST END |
| CQFM | HARDNESS RATING | 55.0 ROCKWELL C MINIMUM OVERALL AND 59.0 ROCKWELL C MAXIMUM OVERALL |
| CQLT | MOUNTING HOLE NOMINAL THREAD SIZE | 0.375 INCHES AXIALLY THROUGH BODY,FIRST END |
| CTQY | MOUNTING HOLE TYPE AND QUANTITY | 6 THREADED AXIALLY THROUGH BODY,FIRST END |
| CWCD | NOMINAL OUTSIDE DIAMETER | 10.745 INCHES |
| CWMW | TEETH TYPE | SINGLE HELIX |
| CWNH | TOOTH FORM | STANDARD |
| CWNM | TOOTH DIRECTION | RIGHT |
| CWPP | PRESSURE ANGLE | 20.0000 DEGREES |
| CWPZ | HELIX ANGLE | 12.5000 DEGREES |
| CWQL | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 1.250 INCHES FIRST END |
| CWRB | BODY RECESS NOMINAL DEPTH | 0.620 INCHES SECOND END |
| CWRM | FACE NOMINAL WIDTH | 1.380 INCHES |
| CWRS | BORE NOMINAL DIAMETER | 2.8757 INCHES FIRST END |
| CWSN | KEYWAY NOMINAL WIDTH | 0.750 INCHES BOTH ENDS |
| CWSR | NOMINAL DISTANCE FROM BORE CENTER TO KEYWAY BOTTOM | 1.8125 INCHES FIRST END |
| CWTR | HUB STYLE DESIGNATOR | PLAIN FIRST END |
| CWTX | HUB NOMINAL DIAMETER | 4.250 INCHES FIRST END |
| CWZN | BOLT HOLE CIRCLE NOMINAL DIAMETER | 3.500 INCHES AXIALLY THROUGH BODY,FIRST END |
| FEAT | SPECIAL FEATURES | 0.1880 IN RADIUS ON BB END OF WEBBING |
| MATT | MATERIAL | STEEL COMP 8625 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | FED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | PROTRUDING HUB,RECESSED BODY |
| Relevant Components for NSN - 3020-00-234-3990, 3020002343990 | ||||
| 3040-01-293-6061 (3040012936061) | 3020-01-092-7507 (3020010927507) | 3020-01-526-6231 (3020015266231) | 3020-01-177-2167 (3020011772167) | |
| 3020-00-418-5559 (3020004185559) | 3040-00-011-9183 (3040000119183) | 3040-00-752-1099 (3040007521099) | 3040-00-423-9886 (3040004239886) | |
| 3020-01-109-4621 (3020011094621) | 3020-01-222-8376 (3020012228376) | 3020-00-875-8283 (3020008758283) | 3040-00-426-1884 (3040004261884) | |
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