The Gear Assembly,speed Decreaser, cataloged under National Stock Number 3010-01-487-5081, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is B.w. Elliott Manufacturing Co., Llc. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3010-01-487-5081 |
| Primary Part Number | 20081M503A |
| Item Name | Gear Assembly,speed Decreaser |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | B.w. Elliott Manufacturing Co., Llc |
| Status | ACTIVE |
| Input Shaft Quantity | 1 |
| Gear Type | BEVEL |
| Lubrication System | GREASE FILM |
| Features Provided | SHIPBOARD USAGE DESIGN |
| Input Shaft Type | KEYWAY |
| Shaft Position | INPUT SHAFT IS ABOVE AND TO THE LEFT OF THE OUTPUT SHAFT |
| Output Shaft Type | KEYWAY AND SHOULDERED AND SPLINE |
| 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 |
|---|---|
| 512-6404652-149 | Naval Sea Systems Command (USA) |
| 20081M503A PRIMARY | B.w. Elliott Manufacturing Co., Llc (USA) |
| B-805-20081-503 | B.w. Elliott Manufacturing Co., Llc (USA) |
| Reference | Meaning |
|---|---|
| 6404652 | D/9 Drawing number reference only Naval Sea Systems Command |
| 20081 | D/9 Drawing number reference only B.w. Elliott Manufacturing Co., Llc |
NSN 3010-01-487-5081 is a Gear Assembly,speed Decreaser, manufactured by B.w. Elliott Manufacturing Co., Llc, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-01-487-5081 has 3 manufacturer part numbers on file: 512-6404652-149 (Naval Sea Systems Command), 20081M503A (B.w. Elliott Manufacturing Co., Llc), B-805-20081-503 (B.w. Elliott Manufacturing Co., Llc).
Key specifications for 20081M503A: Input Shaft Quantity: 1; Gear Type: BEVEL; Lubrication System: GREASE FILM; Features Provided: SHIPBOARD USAGE DESIGN. 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.