The Gear,spur, cataloged under National Stock Number 3020-01-307-8877, 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 Lockheed Martin Corporation Div Rms. Government technical data includes 17 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-307-8877 |
| Primary Part Number | T-8003157-9 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Keyway Nominal Width | 0.126 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 0.501 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.812 INCHES BOTH ENDS IN |
| Teeth Quantity | 60 |
| Body Style | PLAIN, SOLID |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.063 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.312 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUBS |
| Pitch Diameter | 2.5000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 2.583 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.176 INCHES BOTH ENDS IN |
| Pressure Angle | 14.5000 DEGREES |
| Material | ALUMINUM ALLOY OVERALL |
| Face Nominal Width | 0.250 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 |
|---|---|
| T-8003157-9 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| 298377-9 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 298377PC9 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 298377 | D/9 Drawing number reference only Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 3020-01-307-8877 is a Gear,spur, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-307-8877 has 2 manufacturer part numbers on file: T-8003157-9 (Lockheed Martin Corporation Div Rms), 298377-9 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 3020-01-308-4354. Verify interchangeability with system specifications before substitution.
Key specifications for T-8003157-9: Keyway Nominal Width: 0.126 INCHES BOTH ENDS IN; Bore Nominal Diameter: 0.501 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.812 INCHES BOTH ENDS IN; Teeth Quantity: 60. 17 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.