The Gear,internal, cataloged under National Stock Number 3020-00-374-7249, 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 Rockford Powertrain Inc Div Powertrain Rockford, Inc.. Government technical data includes 15 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through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-00-374-7249 |
| Primary Part Number | 2-05856 |
| Item Name | Gear,internal |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Rockford Powertrain Inc Div Powertrain Rockford, Inc. |
| Status | ACTIVE |
| Teeth Quantity | 72 |
| Body Style | PLAIN, SOLID |
| Mounting Hole Type and Quantity | 8 PLAIN AXIALLY THROUGH BODY FIRST END |
| Mounting Hole Nominal Diameter | 0.406 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Teeth Type | SPUR |
| Hardness Rating | 187.0 BRINELL STANDARD NOMINAL OVERALL |
| Nominal Overall Length | 0.875 INCHES IN |
| Style Designator | PLAIN RING |
| Pitch Diameter | 12.0100 INCHES MINIMUM AND 12.0150 INCHES MAXIMUM IN |
| Tooth Form | STANDARD |
| Nominal Outside Diameter | 13.873 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | IRON OVERALL |
| Bolt Hole Circle Nominal Diameter | 13.125 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Attachment Method | MOUNTING HOLE |
| 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 |
|---|---|
| 2-05856 PRIMARY | Rockford Powertrain Inc Div Powertrain Rockford, Inc. (USA) |
| Reference | Meaning |
|---|---|
| K3282 | 5/9 Secondary reference Amca Intl Corp Insley Mfg Corp Div |
| P28800 | 5/9 Secondary reference Koehring Co Lorain Div |
| 5192163 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
| CL-6950 | 5/9 Secondary reference Rockford Powertrain Inc Div Powertrain Rockford, Inc. |
| 267065R1 | 5/9 Secondary reference Komatsu American Intl Co |
| 2-722-249-05845 | 5/9 Secondary reference Rockford Powertrain Inc Div Powertrain Rockford, Inc. |
| 267065R1 | 5/9 Secondary reference U.S. Government activity |
| 5192163 | 5/9 Secondary reference Rolls-Royce Solutions America Inc |
| 267065R1 | 5/9 Secondary reference Navistar International Corporation Dba Navistar |
NSN 3020-00-374-7249 is a Gear,internal, manufactured by Rockford Powertrain Inc Div Powertrain Rockford, Inc., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-374-7249 has 1 manufacturer part number on file: 2-05856 (Rockford Powertrain Inc Div Powertrain Rockford, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 6150-01-227-0292. Verify interchangeability with system specifications before substitution.
Key specifications for 2-05856: Teeth Quantity: 72; Body Style: PLAIN, SOLID; Mounting Hole Type and Quantity: 8 PLAIN AXIALLY THROUGH BODY FIRST END; Mounting Hole Nominal Diameter: 0.406 INCHES AXIALLY THROUGH BODY FIRST END IN. 15 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.