The Gear,spur, cataloged under National Stock Number 3020-00-808-6350, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-808-6350 |
| Primary Part Number | 1847157 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Bore Nominal Diameter | 10.313 INCHES BOTH ENDS IN |
| Teeth Quantity | 480 |
| Surface Treatment Document and Classification | MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | PLAIN, WITH LIGHTENING HOLES |
| Counterbore Nominal Diameter | 11.250 INCHES FIRST END IN |
| Bore Style | W/COUNTERBORE FIRST END |
| Mounting Hole Type and Quantity | 8 PLAIN AND 2 THREADED AXIALLY THROUGH BODY FIRST END |
| Mounting Hole Nominal Diameter | 0.193 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Style Designator | HUBLESS |
| Material Document and Classification | QQ-A-250/4,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 20.0000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Mounting Hole Nominal Thread Size | 0.190 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Nominal Outside Diameter | 20.083 INCHES IN |
| Mounting Hole Thread Quantity Per Inch | 32 AXIALLY THROUGH BODY FIRST END |
| Surface Treatment | OXIDE FILM OVERALL |
| Pressure Angle | 14.5000 DEGREES |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Bolt Hole Circle Nominal Diameter | 10.750 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Counterbore Nominal Depth | 0.250 INCHES FIRST END IN |
| Mounting Hole Thread Series Designator | UNF AXIALLY THROUGH BODY FIRST END |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.468 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1847157 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 1003197 | 5/9 Secondary reference Lockheed Martin Corporation Div Rms - Mitchel Field |
| 1847157REVG | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 3020-00-808-6350 is a Gear,spur, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-808-6350 has 1 manufacturer part number on file: 1847157 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 5980-01-506-2108. Verify interchangeability with system specifications before substitution.
Key specifications for 1847157: Bore Nominal Diameter: 10.313 INCHES BOTH ENDS IN; Teeth Quantity: 480; Surface Treatment Document and Classification: MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Body Style: PLAIN, WITH LIGHTENING HOLES. 23 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.