The Gear,spur, cataloged under National Stock Number 3020-01-476-1869, 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 Naval Sea Systems Command. Government technical data includes 19 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-476-1869 |
| Primary Part Number | 721-7070284-15 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.810 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.1755 INCHES SECOND END IN |
| Hub Nominal Diameter | 1.184 INCHES FIRST END IN |
| Teeth Quantity | 18 |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 1.120 INCHES BOTH ENDS IN |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | QQ-N-285 CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.8000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | 1 GROOVE SECOND END |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 2.000 INCHES IN |
| Nominal Distance From End to First Groove | 0.280 INCHES SECOND END IN |
| Material | NICKEL ALLOY K-500 OVERALL |
| First Groove Nominal Diameter | 0.934 INCHES SECOND END IN |
| First Groove Nominal Width | 0.309 INCHES SECOND END IN |
| Face Nominal Width | 0.810 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 721-7070284-15 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 7070284 | D/9 Drawing number reference only Naval Sea Systems Command |
| H8641401A-15 | 5/2 Secondary reference U.S. Government activity |
| H864-1401-15 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-01-476-1869 is a Gear,spur, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-476-1869 has 1 manufacturer part number on file: 721-7070284-15 (Naval Sea Systems Command).
6 possible matches (shared part number, not a government interchangeability claim): 3020-01-476-1941, 3040-01-476-1994, 4810-01-476-2491. Verify interchangeability with system specifications before substitution.
Key specifications for 721-7070284-15: Bore Nominal Diameter: 0.810 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.1755 INCHES SECOND END IN; Hub Nominal Diameter: 1.184 INCHES FIRST END IN; Teeth Quantity: 18. 19 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.
NSN 3020-01-476-1869 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.