The Gear,antibacklash,spur, cataloged under National Stock Number 3020-00-439-8326, 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 Us Army Aviation and Missile Command. Government technical data includes 29 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 | 3020-00-439-8326 |
| Primary Part Number | 9142983 |
| Item Name | Gear,antibacklash,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| Nominal Distance From End to Second Groove | 0.297 INCHES FIRST END IN |
| Bore Nominal Diameter | 0.688 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.373 INCHES FIRST END IN |
| Hub Nominal Diameter | 1.561 INCHES SECOND END IN |
| Teeth Quantity | 63 |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 1.438 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.132 INCHES SECOND END IN |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | QQ-A-355,T4 FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | QQ-S-763,CL 6 FED SPEC SINGLE MATERIAL RESPONSE HUB |
| Pitch Diameter | 2.6250 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Second Groove Nominal Width | 0.058 INCHES FIRST END IN |
| Hub Style Designator | 1 GROOVE SECOND END |
| Hub Style Designator | 2 GROOVES FIRST END |
| Nominal Outside Diameter | 2.7040 INCHES IN |
| Surface Treatment | PASSIVATE HUB |
| Nominal Distance From End to First Groove | 0.058 INCHES SECOND END IN |
| Nominal Distance From End to First Groove | 0.125 INCHES FIRST END IN |
| Second Groove Nominal Diameter | 1.310 INCHES FIRST END IN |
| Pressure Angle | 14.5000 DEGREES |
| Material | ALUMINUM ALLOY 2024 BODY |
| Material | STEEL CORROSION RESISTING HUB |
| First Groove Nominal Diameter | 1.000 INCHES FIRST END IN |
| First Groove Nominal Diameter | 1.490 INCHES SECOND END IN |
| First Groove Nominal Width | 0.080 INCHES SECOND END IN |
| First Groove Nominal Width | 0.125 INCHES FIRST END IN |
| Face Nominal Width | 0.750 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 |
|---|---|
| 9142983 PRIMARY | Us Army Aviation and Missile Command (USA) |
NSN 3020-00-439-8326 is a Gear,antibacklash,spur, manufactured by Us Army Aviation and Missile Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-439-8326 has 1 manufacturer part number on file: 9142983 (Us Army Aviation and Missile Command).
Key specifications for 9142983: Nominal Distance From End to Second Groove: 0.297 INCHES FIRST END IN; Bore Nominal Diameter: 0.688 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.373 INCHES FIRST END IN; Hub Nominal Diameter: 1.561 INCHES SECOND END IN. 29 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.