The Gear Assembly,speed Decreaser, cataloged under National Stock Number 3010-00-073-6637, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3010-00-073-6637 |
| Primary Part Number | 1800507-5 |
| Item Name | Gear Assembly,speed Decreaser |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Input Shaft Quantity | 1 |
| Design Type | SINGLE REDUCTION |
| Input Shaft Type | STRAIGHT |
| Shaft Position | INPUT AND OUTPUT SHAFTS EXTEND TO RIGHT |
| Total Ratio | 3600.0 TO 1 |
| Output Shaft Type | STRAIGHT |
| Output Shaft Quantity | 1 |
| 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 |
|---|---|
| 1800507-5 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 1800507-5 | 5/9 Secondary reference Lockheed Martin Corporation Div Rms - Mitchel Field |
| X-659-8 | 5/2 Secondary reference U.S. Government activity |
NSN 3010-00-073-6637 is a Gear Assembly,speed Decreaser, manufactured by Northrop Grumman Systems Corporation, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-00-073-6637 has 1 manufacturer part number on file: 1800507-5 (Northrop Grumman Systems Corporation).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-316-6761. Verify interchangeability with system specifications before substitution.
Key specifications for 1800507-5: Input Shaft Quantity: 1; Design Type: SINGLE REDUCTION; Input Shaft Type: STRAIGHT; Shaft Position: INPUT AND OUTPUT SHAFTS EXTEND TO RIGHT. 7 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.