The Gear Cluster, cataloged under National Stock Number 3020-01-173-6274, 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 Lockheed Martin Sippican, Inc. Div Lockheed Martin Marion. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-173-6274 |
| Primary Part Number | 414158-1 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Lockheed Martin Sippican, Inc. Div Lockheed Martin Marion |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.187 INCHES BOTH ENDS IN |
| Design Type | SPUR ALL GEARS |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Overall Length | 0.348 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 |
|---|---|
| 414158-1 PRIMARY | Lockheed Martin Sippican, Inc. Div Lockheed Martin Marion (USA) |
| 00190116 | Thales Dms France SAS (FRA) |
| Reference | Meaning |
|---|---|
| 414158 | D/9 Drawing number reference only Lockheed Martin Sippican, Inc. Div Lockheed Martin Marion |
| ASC1548906 | 5/9 Secondary reference Asc Pty Ltd |
| 00190116 | 5/9 Secondary reference Thales Underwater Systems SAS |
NSN 3020-01-173-6274 is a Gear Cluster, manufactured by Lockheed Martin Sippican, Inc. Div Lockheed Martin Marion, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-173-6274 has 2 manufacturer part numbers on file: 414158-1 (Lockheed Martin Sippican, Inc. Div Lockheed Martin Marion), 00190116 (Thales Dms France SAS).
1 possible match (shared part number, not a government interchangeability claim): 5925-01-188-4300. Verify interchangeability with system specifications before substitution.
Key specifications for 414158-1: Bore Nominal Diameter: 0.187 INCHES BOTH ENDS IN; Design Type: SPUR ALL GEARS; Bore Style: PLAIN BOTH ENDS; Nominal Overall Length: 0.348 INCHES IN. 4 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.