The Sprocket Wheel, cataloged under National Stock Number 3020-01-238-7097, 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 Northrop Grumman Systems Corporation. Government technical data includes 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-238-7097 |
| Primary Part Number | 821302-5 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Hub Outside Diameter | 0.656 INCHES NOMINAL AA END IN |
| Securing Method | SETSCREW |
| Bore Length | 0.638 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Tooth Pitch | 0.187 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Material Document and Classification | MIL-S-7720, COMP 303S, COND A MIL SPEC SINGLE MATERIAL RESPONSE |
| Pitch Diameter | 0.901 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 15 |
| Protruding Hub Characteristic | PLAIN |
| Hardness Rating Test Method | NOT RATED |
| Distance From Hub End to Flange End | 0.250 INCHES NOMINAL AA END IN |
| Bore Diameter | 0.375 INCHES NOMINAL IN |
| Material | STEEL COMP 303 |
| Face Width | 0.138 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 |
|---|---|
| 821302-5 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 821302-5 | 5/9 Secondary reference Rexnord Industries, Llc Div Link-Belt Bearing Operation |
| 821302 | 7/1 Vendor item drawing reference Northrop Grumman Systems Corporation |
NSN 3020-01-238-7097 is a Sprocket Wheel, manufactured by Northrop Grumman Systems Corporation, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-238-7097 has 1 manufacturer part number on file: 821302-5 (Northrop Grumman Systems Corporation).
1 possible match (shared part number, not a government interchangeability claim): 4720-01-502-8200. Verify interchangeability with system specifications before substitution.
Key specifications for 821302-5: Hub Outside Diameter: 0.656 INCHES NOMINAL AA END IN; Securing Method: SETSCREW; Bore Length: 0.638 INCHES NOMINAL IN; Design Form: PLAIN. 18 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.