The Sprocket Wheel, cataloged under National Stock Number 3020-01-302-9249, 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 Bergen Engines As. Government technical data includes 13 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-302-9249 |
| Primary Part Number | 053171 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Bergen Engines As |
| Status | ACTIVE |
| Bore Length | 55.0 MILLIMETERS NOMINAL MM |
| Design Form | PLAIN |
| Tooth Pitch | 1.250 INCHES NOMINAL IN |
| Asa Standard Chain Number | 100-2 |
| Outside Diameter | 251.0 MILLIMETERS NOMINAL MM |
| Style Designator | PLAIN |
| Pitch Diameter | 235.2 MILLIMETERS NOMINAL MM |
| Bore Type | STRAIGHT |
| Teeth Row Quantity | 2 |
| Teeth Quantity Per Row | 23 |
| Hardness Rating Test Method | NOT RATED |
| Bore Diameter | 90.0 MILLIMETERS NOMINAL MM |
| Face Width | 55.0 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| 053171 | Bergen Engines As (NOR) |
| 053171 | Motor-Services Hugo Stamp, Inc (USA) |
| Reference | Meaning |
|---|---|
| 053171 | 3/9 Design control — primary reference Rolls-Royce Marine North America Inc |
| LE451/44 | 5/9 Secondary reference Ulstein Bergen A/s |
| 87433 | 5/9 Secondary reference Ulstein Bergen A/s |
| 87433 | 5/9 Secondary reference Ulstein Usa Inc |
NSN 3020-01-302-9249 is a Sprocket Wheel, manufactured by Bergen Engines As, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-302-9249 has 2 manufacturer part numbers on file: 053171 (Bergen Engines As), 053171 (Motor-Services Hugo Stamp, Inc).
Key specifications for 053171: Bore Length: 55.0 MILLIMETERS NOMINAL MM; Design Form: PLAIN; Tooth Pitch: 1.250 INCHES NOMINAL IN; Asa Standard Chain Number: 100-2. 13 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.