The Gear,spur, cataloged under National Stock Number 3020-01-028-9335, 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 25 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-028-9335 |
| Primary Part Number | 2893898-1 |
| Item Name | Gear,spur |
| 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 |
| Bore Nominal Diameter | 25.1 MILLIMETERS BOTH ENDS MM |
| Hub Nominal Diameter | 36.0 MILLIMETERS FIRST END MM |
| Teeth Quantity | 28 |
| Surface Treatment Document and Classification | MIL-C-16232,TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | PLAIN, SOLID |
| Counterbore Nominal Diameter | 28.5 MILLIMETERS SECOND END MM |
| Bore Style | W/COUNTERBORE SECOND END |
| Bore Style | INVOLUTE SPLINE FIRST END |
| Mounting Hole Type and Quantity | 4 PLAIN AXIALLY THROUGH BODY FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 32.0 MILLIMETERS FIRST END MM |
| Mounting Hole Nominal Diameter | 4.0 MILLIMETERS AXIALLY THROUGH BODY FIRST END MM |
| Style Designator | PROTRUDING HUB |
| Pitch Diameter | 59.0 MILLIMETERS NOMINAL MM |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN FIRST END |
| Spline Quantity | 14 FIRST END |
| Nominal Outside Diameter | 62.44 MILLIMETERS MM |
| Surface Treatment | PHOSPHATE OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL OVERALL |
| Bolt Hole Circle Nominal Diameter | 46.0 MILLIMETERS AXIALLY THROUGH BODY FIRST END MM |
| Counterbore Nominal Depth | 7.5 MILLIMETERS SECOND END MM |
| Spline Pitch Diameter | 22.225 MILLIMETERS NOMINAL FIRST END MM |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 10.0 MILLIMETERS MM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2893898-1 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 2893898 | D/9 Drawing number reference only Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 3020-01-028-9335 is a Gear,spur, 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 3020-01-028-9335 has 1 manufacturer part number on file: 2893898-1 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 3020-01-361-1058. Verify interchangeability with system specifications before substitution.
Key specifications for 2893898-1: Bore Nominal Diameter: 25.1 MILLIMETERS BOTH ENDS MM; Hub Nominal Diameter: 36.0 MILLIMETERS FIRST END MM; Teeth Quantity: 28; Surface Treatment Document and Classification: MIL-C-16232,TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 25 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.
NSN 3020-01-028-9335 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.