The Gear,spur, cataloged under National Stock Number 3020-00-893-4270, 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 21 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-893-4270 |
| Primary Part Number | 1877206 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Teeth Quantity | 190 |
| Body Style | PLAIN, SOLID |
| Counterbore Nominal Diameter | 0.750 INCHES COUNTER BORE SECOND END IN |
| Bore Style | W/COUNTERBORE COUNTER BORE SECOND END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.546 INCHES FIRST END IN |
| First Step Nominal Length | 0.250 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | QQ-A-268 FED SPEC SINGLE MATERIAL RESPONSE HUB |
| Material Document and Classification | QQ-A-355 FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Pitch Diameter | 2.9680 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 1.375 INCHES FIRST END IN |
| Hub Style Designator | 1 STEP FIRST END |
| End Nominal Length | 0.296 INCHES FIRST END IN |
| Nominal Outside Diameter | 2.999 INCHES IN |
| End Nominal Diameter | 0.625 INCHES FIRST END IN |
| Pressure Angle | 14.5000 DEGREES |
| Material | ALUMINUM ALLOY 2024 BODY |
| Material | ALUMINUM ALLOY 2024 HUB |
| Counterbore Nominal Depth | 0.250 INCHES COUNTER BORE SECOND END IN |
| Face Nominal Width | 0.125 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 |
NSN 3020-00-893-4270 is a Gear,spur, manufactured by Northrop Grumman Systems Corporation, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-893-4270 has 2 manufacturer part numbers on file: 1877206 (Lockheed Martin Corporation Div Rms - Mitchel Field), 1877206 (Northrop Grumman Systems Corporation).
Key specifications for 1877206: Teeth Quantity: 190; Body Style: PLAIN, SOLID; Counterbore Nominal Diameter: 0.750 INCHES COUNTER BORE SECOND END IN; Bore Style: W/COUNTERBORE COUNTER BORE SECOND END. 21 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.