The Gear,spur, cataloged under National Stock Number 3020-00-110-8591, 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 Northrop Grumman Systems Corporation. Government technical data includes 9 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 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 | 3020-00-110-8591 |
| Primary Part Number | 297537 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.188 INCHES BOTH ENDS IN |
| Teeth Quantity | 75 |
| Bore Style | PLAIN BOTH ENDS |
| Style Designator | FLANGED END |
| Pitch Diameter | 2.3430 INCHES NOMINAL IN |
| Nominal Distance Between Outer Body Face and Inner Flange Face | 0.4375 INCHES IN |
| Nominal Outside Diameter | 2.4050 INCHES IN |
| Material | COPPER ALLOY 861 OR COPPER ALLOY 862 OR COPPER ALLOY 863 OVERALL |
| Face Nominal Width | 0.093 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 |
|---|---|
| 297537 PRIMARY | Northrop Grumman Systems Corporation (USA) |
NSN 3020-00-110-8591 is a Gear,spur, manufactured by Northrop Grumman Systems Corporation, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-110-8591 has 1 manufacturer part number on file: 297537 (Northrop Grumman Systems Corporation).
1 possible match (shared part number, not a government interchangeability claim): 1650-00-838-0966. Verify interchangeability with system specifications before substitution.
Key specifications for 297537: Bore Nominal Diameter: 0.188 INCHES BOTH ENDS IN; Teeth Quantity: 75; Bore Style: PLAIN BOTH ENDS; Style Designator: FLANGED END. 9 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.