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) | 00-377-2905 (003772905) |
| NCB Code | USA (00) |
| Manufacturer | La Gary Co, Trw Limited, Cummins Incorporated |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAQL | BODY STYLE | WEBBED,OFFSET,SOLID |
| ABSX | ATTACHMENT METHOD | MOUNTING HOLE |
| AGJS | PITCH DIAMETER | 9.7500 INCHES NOMINAL |
| AJLA | TEETH QUANTITY | 72 |
| ANTP | BORE STYLE | PLAIN BOTH ENDS |
| CQFM | HARDNESS RATING | 31.0 ROCKWELL C MINIMUM OVERALL AND 35.0 ROCKWELL C MAXIMUM OVERALL |
| CTQY | MOUNTING HOLE TYPE AND QUANTITY | 6 PLAIN AXIALLY THROUGH HUB,FIRST END |
| CWCD | NOMINAL OUTSIDE DIAMETER | 9.997 INCHES |
| CWMW | TEETH TYPE | SINGLE HELIX |
| CWNH | TOOTH FORM | STANDARD |
| CWNM | TOOTH DIRECTION | RIGHT |
| CWPP | PRESSURE ANGLE | 20.0000 DEGREES |
| CWPZ | HELIX ANGLE | 22.6198 DEGREES |
| CWQR | NOMINAL DISTANCE BETWEEN BODY FACE AND RECESSED HUB END | 0.218 INCHES BOTH ENDS |
| CWRB | BODY RECESS NOMINAL DEPTH | 0.468 INCHES SECOND END |
| CWRM | FACE NOMINAL WIDTH | 1.250 INCHES |
| CWRS | BORE NOMINAL DIAMETER | 2.6250 INCHES BOTH ENDS |
| CWTB | COUNTERBORE NOMINAL DEPTH | 0.2187 INCHES SECOND END |
| CWTG | COUNTERBORE NOMINAL DIAMETER | 4.250 INCHES SECOND END |
| CWTR | HUB STYLE DESIGNATOR | PLAIN FIRST END |
| CWTX | HUB NOMINAL DIAMETER | 4.312 INCHES FIRST END |
| CWZK | MOUNTING HOLE NOMINAL DIAMETER | 0.374 INCHES AXIALLY THROUGH HUB,FIRST END |
| CWZN | BOLT HOLE CIRCLE NOMINAL DIAMETER | 3.375 INCHES AXIALLY THROUGH HUB,FIRST END |
| FEAT | SPECIAL FEATURES | NFIG 1 ON END OF HUB ON CENTERLINE OF MTG HOLE,LETTER O LOCATED ON FACE OF GEAR AT ROOT OF TOOTH SPACE 65 DEG 44 MIN CW FROM FIG 1,DOUBLE CHISEL MARKS AT ROOT OF TWO TEETH SPACES 64 DEG 16 MIN CCW FROM FIG 1 MARK |
| MATT | MATERIAL | STEEL COMP 4340H OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL AND AISI/SAE 4340H ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Relevant Components for NSN - 3020-00-377-2905, 3020003772905 | ||||
| 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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