The Gear,spur, cataloged under National Stock Number 3020-01-189-8873, 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 Astronautics Corporation of America. Government technical data includes 15 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. 2 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 | 3020-01-189-8873 |
| Primary Part Number | 130977 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Astronautics Corporation of America |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.820 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.890 INCHES FIRST END IN |
| Teeth Quantity | 182 |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.476 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | QQ-A-225/8,T651 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.8958 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 1.917 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | ALUMINUM ALLOY 6061 OVERALL |
| Face Nominal Width | 0.060 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 |
|---|---|
| 130977 PRIMARY | Astronautics Corporation of America (USA) |
NSN 3020-01-189-8873 is a Gear,spur, manufactured by Astronautics Corporation of America, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-189-8873 has 1 manufacturer part number on file: 130977 (Astronautics Corporation of America).
2 possible matches (shared part number, not a government interchangeability claim): 4940-01-486-8780, 2520-01-616-5385. Verify interchangeability with system specifications before substitution.
Key specifications for 130977: Bore Nominal Diameter: 1.820 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.890 INCHES FIRST END IN; Teeth Quantity: 182; Body Style: PLAIN, SOLID. 15 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.