The Gear,spur, cataloged under National Stock Number 3020-01-152-5811, 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 9 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-152-5811 |
| Primary Part Number | 518-4674789 ITEM 3 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Teeth Quantity | 84 |
| Body Style | PLAIN, SOLID |
| Style Designator | PROTRUDING HUB |
| Pitch Diameter | 2.6250 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Nominal Outside Diameter | 2.687 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.250 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 |
|---|---|
| 518-4674789 ITEM 3 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 518-4674789 | D/9 Drawing number reference only Naval Sea Systems Command |
| 87624-1504 ITEM 3 | 3/2 Design control — primary reference U.S. Government activity |
| 87624-1504 | D/9 Drawing number reference only U.S. Government activity |
NSN 3020-01-152-5811 is a Gear,spur, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-152-5811 has 1 manufacturer part number on file: 518-4674789 ITEM 3 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-153-1517. Verify interchangeability with system specifications before substitution.
Key specifications for 518-4674789 ITEM 3: Teeth Quantity: 84; Body Style: PLAIN, SOLID; Style Designator: PROTRUDING HUB; Pitch Diameter: 2.6250 INCHES NOMINAL IN. 9 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.