The Gear,spur, cataloged under National Stock Number 3020-01-307-8007, 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 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-307-8007 |
| Primary Part Number | 298374-4 |
| 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 |
| Teeth Quantity | 60 |
| Body Style | PLAIN, SOLID |
| Mounting Hole Type and Quantity | 4 THREADED AND 2 PLAIN AXIALLY THROUGH BODY FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.234 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.236 INCHES FIRST END IN |
| First Step Nominal Length | 0.171 INCHES FIRST END IN |
| First Step Nominal Length | 0.172 INCHES SECOND END IN |
| Mounting Hole Nominal Diameter | 0.127 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Style Designator | PROTRUDING HUBS |
| Pitch Diameter | 2.5000 INCHES NOMINAL IN |
| First Step Nominal Diameter | 1.500 INCHES BOTH ENDS IN |
| Hub Style Designator | 1 STEP BOTH ENDS |
| Mounting Hole Nominal Thread Size | 0.138 INCHES AXIALLY THROUGH BODY FIRST END IN |
| End Nominal Length | 0.062 INCHES SECOND END IN |
| End Nominal Length | 0.065 INCHES FIRST END IN |
| Nominal Outside Diameter | 2.583 INCHES IN |
| End Nominal Diameter | 1.375 INCHES BOTH ENDS IN |
| Pressure Angle | 14.5000 DEGREES |
| Material | STEEL CORROSION RESISTING OVERALL |
| Mounting Hole Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) AXIALLY THROUGH BODY FIRST END |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.188 INCHES 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 |
|---|---|
| 298374-4 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| T-8003154-4 | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| 298374 | D/9 Drawing number reference only Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 3020-01-307-8007 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 3020-01-307-8007 has 2 manufacturer part numbers on file: 298374-4 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), T-8003154-4 (Lockheed Martin Corporation Div Rms).
3 possible matches (shared part number, not a government interchangeability claim): 3020-01-307-8008, 3020-01-308-0731, 5360-01-520-7180. Verify interchangeability with system specifications before substitution.
Key specifications for 298374-4: Teeth Quantity: 60; Body Style: PLAIN, SOLID; Mounting Hole Type and Quantity: 4 THREADED AND 2 PLAIN AXIALLY THROUGH BODY FIRST END; Nominal Distance Between Body Face and Protruding Hub End: 0.234 INCHES SECOND END 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.