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| Item Name | Pulley Groove |
| Federal Supply Group (FSG) | Mechanical Power Transmission Equipment |
| Federal Supply Class (FSC) | 3020 Gear Pulley Sprocket and Transmission Chain |
| National Item Identification Number (NIIN) | 00-493-7178 (004937178) |
| NCB Code | USA (00) |
| Manufacturer | Lockheed Martin Corporation |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABGA | GROOVE DEPTH | 0.031 INCHES NOMINAL |
| ABGF | GROOVE WIDTH | 0.031 INCHES NOMINAL |
| ABHE | OUTSIDE DIAMETER | 1.250 INCHES NOMINAL |
| ABHP | OVERALL LENGTH | 0.375 INCHES NOMINAL |
| ABXV | BORE DIAMETER | 0.125 INCHES NOMINAL |
| ADGE | BORE LENGTH | 0.500 INCHES NOMINAL |
| AGGP | DRILLED HOLE DIAMETER | 0.031 INCHES NOMINAL |
| AGJS | PITCH DIAMETER | 0.750 INCHES NOMINAL |
| AGWA | GROOVE RADIUS | 0.016 INCHES NOMINAL |
| AHYF | SECURING HOLE QUANTITY | 2 |
| ANNQ | MATERIAL AND LOCATION | STEEL BODY |
| AQPL | FACE WIDTH | 0.250 INCHES NOMINAL |
| ARJD | DESIGN FORM | PLAIN |
| ASBP | BORE TYPE | STRAIGHT |
| AWJQ | BEARINGS | NOT INCLUDED |
| AXHQ | GROOVE QUANTITY | 2 |
| AXND | COUNTERBORE FEATURE | NOT INCLUDED |
| BFYT | HOLE LOCATION | ONE HOLE AT TOP AND BOTTOM EAR OF PULLEY |
| BSGG | KEYING FACILITY | NOT INCLUDED |
| BSNP | SECURING METHOD | SLOTTED |
| BSYG | SPLIT HUB FEATURE | INCLUDED |
| BXSJ | LIGHTENING HOLE | NOT INCLUDED |
| BXSK | INTEGRAL COOLING VANE | NOT INCLUDED |
| BXSM | GROOVE SHAPE | U |
| BYDS | BORE FEATURE | INCLUDED |
| BYDZ | PROTRUDING HUB CHARACTERISTIC | PLAIN |
| BYFC | HUB SPLIT LOCATION | THROUGH ONE WALL |
| BYFD | CLAMPING BOLT QUANTITY | 2 |
| BYFF | SECURING LOCATION | PULLEY SURFACE |
| BYZD | HUB END OUTSIDE DIAMETER AND LOCATION | 0.188 INCHES NOMINAL AA END |
| BYZF | DISTANCE FROM OUTSIDE FLANGE/RIM TO HUB END AND LOCATION | 0.281 INCHES NOMINAL AA END |
| STYL | STYLE DESIGNATOR | PLAIN |
| Relevant Components for NSN - 3020-00-493-7178, 3020004937178 | ||||
| 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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