The Gear,spur, cataloged under National Stock Number 3020-00-139-4142, 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 L3harris Interstate Electronics Corporation. Government technical data includes 18 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-139-4142 |
| Primary Part Number | 709-1112-105 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | L3harris Interstate Electronics Corporation |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.187 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.380 INCHES FIRST END IN |
| Teeth Quantity | 72 |
| Surface Treatment Document and Classification | MIL-A-8625,TYPE 2,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.215 INCHES FIRST END IN |
| Precision Classification | QUALITY NUMBER 12 |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | QQ-A-250/4,T3 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.0000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PINNED FIRST END |
| Nominal Outside Diameter | 1.027 INCHES IN |
| Surface Treatment | ANODIZE OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 709-1112-105 PRIMARY | L3harris Interstate Electronics Corporation (USA) |
NSN 3020-00-139-4142 is a Gear,spur, manufactured by L3harris Interstate Electronics Corporation, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-139-4142 has 1 manufacturer part number on file: 709-1112-105 (L3harris Interstate Electronics Corporation).
Key specifications for 709-1112-105: Bore Nominal Diameter: 0.187 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.380 INCHES FIRST END IN; Teeth Quantity: 72; Surface Treatment Document and Classification: MIL-A-8625,TYPE 2,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 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.