The Sprocket Wheel, cataloged under National Stock Number 3020-00-256-6532, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 22 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 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 | 3020-00-256-6532 |
| Primary Part Number | 2860123 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Spline Minor Diameter | 3.875 INCHES NOMINAL IN |
| Hub Outside Diameter | 5.125 INCHES NOMINAL BOTH ENDS IN |
| Design Form | PLAIN |
| Tooth Pitch | 1.500 INCHES NOMINAL IN |
| Outside Diameter | 15.170 INCHES NOMINAL IN |
| Spline Length | 1.125 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Material Document and Classification | AISI 4140 ASSN STD SINGLE MATERIAL RESPONSE |
| Pitch Diameter | 14.350 INCHES NOMINAL IN |
| Spline Major Diameter | 4.125 INCHES NOMINAL IN |
| Bore Type | INVOLUTE SPLINE |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 30 |
| Spline Pressure Angle in Deg | 30.0 |
| Protruding Hub Characteristic | PLAIN |
| Hardness Rating Test Method | NOT RATED |
| Spline Quantity | 32 |
| Distance From Hub End to Flange End | 0.250 INCHES NOMINAL BOTH ENDS IN |
| Material | STEEL COMP 4140 |
| Furnished Items | LIGHTENING HOLE |
| Face Width | 0.410 INCHES NOMINAL IN |
| Spline Pitch Diameter | 4.000 INCHES NOMINAL IN |
| 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 |
|---|---|
| 2860123 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 3020-00-256-6532 is a Sprocket Wheel, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-256-6532 has 1 manufacturer part number on file: 2860123 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 5306-01-595-1498. Verify interchangeability with system specifications before substitution.
Key specifications for 2860123: Spline Minor Diameter: 3.875 INCHES NOMINAL IN; Hub Outside Diameter: 5.125 INCHES NOMINAL BOTH ENDS IN; Design Form: PLAIN; Tooth Pitch: 1.500 INCHES NOMINAL IN. 22 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.