The Gear Assembly,speed Decreaser, cataloged under National Stock Number 3010-01-435-9208, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 3010-01-435-9208 |
| Primary Part Number | 218016519 |
| Item Name | Gear Assembly,speed Decreaser |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Input Shaft Quantity | 1 |
| Design Type | SINGLE REDUCTION |
| Gear Type | WORM |
| Input Shaft Type | SHOULDERED |
| Shaft Position | OUTPUT SHAFT EXTENDS TO LEFT AND RIGHT |
| Total Ratio | 50 TO 1 |
| Output Shaft Type | SHOULDERED |
| 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 |
|---|---|
| 581-6405749-AYB | Naval Sea Systems Command (USA) |
| 218016519 PRIMARY | Naval Sea Systems Command (USA) |
| 581-6405749 ASSY AHDA-B | Naval Sea Systems Command (USA) |
| 581-6405749 ASSEMBLY B | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| DF2011-235 AY B | 5/2 Secondary reference U.S. Government activity |
| 6405749 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3010-01-435-9208 is a Gear Assembly,speed Decreaser, manufactured by Naval Sea Systems Command, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-01-435-9208 has 4 manufacturer part numbers on file: 581-6405749-AYB (Naval Sea Systems Command), 218016519 (Naval Sea Systems Command), 581-6405749 ASSY AHDA-B (Naval Sea Systems Command), 581-6405749 ASSEMBLY B (Naval Sea Systems Command).
4 possible matches (shared part number, not a government interchangeability claim): 4820-01-435-9881, 3040-01-436-7742, 3020-01-436-7768. Verify interchangeability with system specifications before substitution.
Key specifications for 218016519: Input Shaft Quantity: 1; Design Type: SINGLE REDUCTION; Gear Type: WORM; Input Shaft Type: SHOULDERED. 8 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.