The Gear,antibacklash,spur, cataloged under National Stock Number 3020-01-486-6752, 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 16 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 | 3020-01-486-6752 |
| Primary Part Number | 1812860 |
| Item Name | Gear,antibacklash,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.250 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.437 INCHES FIRST END IN |
| Teeth Quantity | 130 |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.325 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUB |
| Pitch Diameter | 2.0313 INCHES NOMINAL IN |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 2.063 INCHES IN |
| Surface Treatment | ANODIZE OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 302 SPRING |
| Material | ALUMINUM ALLOY 2024 SECOND GEAR |
| Material | ALUMINUM ALLOY 2024 FIRST GEAR |
| Material | STEEL COMP 303 HUB |
| Face Nominal Width | 0.104 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 |
|---|---|
| 1812860 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| 1981509 PC 15 | Northrop Grumman Systems Corporation (USA) |
NSN 3020-01-486-6752 is a Gear,antibacklash,spur, manufactured by Northrop Grumman Systems Corporation, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-486-6752 has 2 manufacturer part numbers on file: 1812860 (Northrop Grumman Systems Corporation), 1981509 PC 15 (Northrop Grumman Systems Corporation).
Key specifications for 1812860: Bore Nominal Diameter: 0.250 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.437 INCHES FIRST END IN; Teeth Quantity: 130; Bore Style: PLAIN BOTH ENDS. 16 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.