The Sprocket Wheel, cataloged under National Stock Number 3020-00-972-0645, 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 L3harris Technologies, Inc. Dba Harris Corporation. Government technical data includes 24 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-972-0645 |
| Primary Part Number | 2270351 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | L3harris Technologies, Inc. Dba Harris Corporation |
| Status | ACTIVE |
| Hub Outside Diameter | 0.750 INCHES NOMINAL BOTH ENDS IN |
| Securing Method | DRILLED HOLE |
| Bore Length | 0.500 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Teeth Hardness Rating | 60.0 ROCKWELL B MINIMUM AND 70.0 ROCKWELL B MAXIMUM |
| Tooth Pitch | 0.147 INCHES NOMINAL IN |
| Outside Diameter | 1.575 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Metallic Hardness Rating and Location | 60.0 ROCKWELL B MINIMUM BODY AND 70.0 ROCKWELL B MAXIMUM BODY |
| Pitch Diameter | 1.500 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 32 |
| Protruding Hub Characteristic | PLAIN |
| Hardness Rating Test Method | ROCKWELL |
| Distance From Hub End to Flange End | 0.375 INCHES NOMINAL BOTH ENDS IN |
| Securing Hole Quantity | 2 |
| Bolt Circle Diameter | 1.062 INCHES NOMINAL IN |
| Drilled Hole Diameter | 0.132 INCHES NOMINAL IN |
| Hole Location | ON SPROCKET FACE |
| Bore Diameter | 0.312 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| Face Width | 0.125 INCHES NOMINAL IN |
| Securing Location | AA END |
| 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 |
|---|---|
| 2270351 | L3harris Technologies, Inc. Dba Harris Corporation (USA) |
| Reference | Meaning |
|---|---|
| 2270351 | 3/9 Design control — primary reference Itt Industries Inc Itt Aerospace Communications Div East |
NSN 3020-00-972-0645 is a Sprocket Wheel, manufactured by L3harris Technologies, Inc. Dba Harris Corporation, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-972-0645 has 1 manufacturer part number on file: 2270351 (L3harris Technologies, Inc. Dba Harris Corporation).
Key specifications for 2270351: Hub Outside Diameter: 0.750 INCHES NOMINAL BOTH ENDS IN; Securing Method: DRILLED HOLE; Bore Length: 0.500 INCHES NOMINAL IN; Design Form: PLAIN. 24 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.