The Sprocket Wheel, cataloged under National Stock Number 3020-00-155-9187, 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 General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems. Government technical data includes 12 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-155-9187 |
| Primary Part Number | 139C6895 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems |
| Status | ACTIVE |
| Securing Method | DRILLED HOLE |
| Design Form | PLAIN |
| Teeth Hardness Rating | 30.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM |
| Criticality Code Justification | FEAT |
| Style Designator | PLAIN |
| Metallic Hardness Rating and Location | 30.0 ROCKWELL C MINIMUM HUB AND 35.0 ROCKWELL C MAXIMUM HUB |
| Bore Type | STRAIGHT |
| Teeth Row Quantity | 1 |
| Hardness Rating Test Method | ROCKWELL |
| Securing Hole Quantity | 2 |
| Drilled Hole Diameter | 0.189 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN |
| Hole Location | AA PORTION OF HUB |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 139C6895 PRIMARY | General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems (USA) |
NSN 3020-00-155-9187 is a Sprocket Wheel, manufactured by General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-155-9187 has 1 manufacturer part number on file: 139C6895 (General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems).
Key specifications for 139C6895: Securing Method: DRILLED HOLE; Design Form: PLAIN; Teeth Hardness Rating: 30.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM; Criticality Code Justification: FEAT. 12 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.