The Gear,spur, cataloged under National Stock Number 3020-01-028-3927, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-028-3927 |
| Primary Part Number | 2893893-1 |
| 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 |
| Nominal Distance From End to Second Groove | 11.3 MILLIMETERS FIRST END MM |
| Bore Nominal Diameter | 25.4 MILLIMETERS BOTH ENDS MM |
| Hub Nominal Diameter | 31.741 MILLIMETERS FIRST END MM |
| Teeth Quantity | 30 |
| Surface Treatment Document and Classification | QQ-P-35,TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | WEBBED, OFFSET, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 12.7 MILLIMETERS FIRST END MM |
| Nominal Distance Between Body Face and Protruding Hub End | 5.3 MILLIMETERS SECOND END MM |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | QQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 127.0 MILLIMETERS NOMINAL MM |
| Tooth Form | STANDARD |
| Second Groove Nominal Width | 1.4 MILLIMETERS FIRST END MM |
| Hub Style Designator | 2 GROOVES FIRST END |
| Nominal Outside Diameter | 137.23 MILLIMETERS MM |
| Surface Treatment | PASSIVATE OVERALL |
| Nominal Distance From End to First Groove | 2.3 MILLIMETERS FIRST END MM |
| Second Groove Nominal Diameter | 30.741 MILLIMETERS FIRST END MM |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 303 OVERALL |
| First Groove Nominal Diameter | 29.0 MILLIMETERS FIRST END MM |
| First Groove Nominal Width | 1.4 MILLIMETERS FIRST END MM |
| Attachment Method | SNAP RING |
| Face Nominal Width | 5.0 MILLIMETERS MM |
| 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 |
|---|---|
| 2893893-1 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 2893893 | D/9 Drawing number reference only Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 3020-01-028-3927 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 3020-01-028-3927 has 1 manufacturer part number on file: 2893893-1 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 4810-01-280-5269. Verify interchangeability with system specifications before substitution.
Key specifications for 2893893-1: Nominal Distance From End to Second Groove: 11.3 MILLIMETERS FIRST END MM; Bore Nominal Diameter: 25.4 MILLIMETERS BOTH ENDS MM; Hub Nominal Diameter: 31.741 MILLIMETERS FIRST END MM; Teeth Quantity: 30. 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.
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.