The Gear,spur, cataloged under National Stock Number 3020-00-710-8137, 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 18 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-710-8137 |
| Primary Part Number | 1876858 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Bore Nominal Diameter | 5.6250 INCHES BOTH ENDS IN |
| Teeth Quantity | 360 |
| Surface Treatment Document and Classification | MIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 8 PLAIN AXIALLY THROUGH BODY FIRST END |
| Mounting Hole Nominal Diameter | 0.1990 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Style Designator | HUBLESS |
| Material Document and Classification | QQ-A-355,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 7.5000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Nominal Outside Diameter | 7.5405 INCHES IN |
| Surface Treatment | ANODIZE OVERALL |
| Pressure Angle | 14.5000 DEGREES |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Bolt Hole Circle Nominal Diameter | 6.375 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Attachment Method | MOUNTING HOLE |
| 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 |
|---|---|
| 1876433RHPC49 | Northrop Grumman Systems Corporation (USA) |
| 1876433RHPC49 | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| 1876858 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| 1876858 | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
NSN 3020-00-710-8137 is a Gear,spur, manufactured by Northrop Grumman Systems Corporation, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-710-8137 has 4 manufacturer part numbers on file: 1876433RHPC49 (Northrop Grumman Systems Corporation), 1876433RHPC49 (Lockheed Martin Corporation Div Rms - Mitchel Field), 1876858 (Northrop Grumman Systems Corporation), 1876858 (Lockheed Martin Corporation Div Rms - Mitchel Field).
Key specifications for 1876858: Bore Nominal Diameter: 5.6250 INCHES BOTH ENDS IN; Teeth Quantity: 360; Surface Treatment Document and Classification: MIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Body Style: PLAIN, SOLID. 18 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.