The Gear,spur, cataloged under National Stock Number 3020-00-800-0256, 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 30 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 | 3020-00-800-0256 |
| Primary Part Number | 8000256 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.523 INCHES BOTH ENDS IN |
| Teeth Quantity | 80 |
| Body Style | PLAIN, SOLID |
| Pilot Nominal Diameter | 0.677 INCHES IN |
| Flange Nominal Thickness | 0.068 INCHES IN |
| Flange Nominal Diameter | 1.562 INCHES IN |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 3 PLAIN AND 3 THREADED AXIALLY THROUGH HUB FIRST END |
| First Step Nominal Length | 0.059 INCHES FIRST END IN |
| Precision Classification | QUALITY NUMBER 6 OR QUALITY NUMBER 7 |
| Mounting Hole Nominal Diameter | 0.136 INCHES AXIALLY THROUGH HUB FIRST END IN |
| Style Designator | FLANGED END WITH PILOT |
| Material Document and Classification | QQ-A-268,T4 FED SPEC SINGLE MATERIAL RESPONSE HUB |
| Material Document and Classification | QQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Pitch Diameter | 1.2500 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 0.186 INCHES FIRST END IN |
| Nominal Distance Between Outer Body Face and Inner Flange Face | 0.125 INCHES IN |
| Hub Style Designator | 1 STEP FIRST END |
| Mounting Hole Nominal Thread Size | 0.112 INCHES AXIALLY THROUGH HUB FIRST END IN |
| Pilot Nominal Length | 0.185 INCHES IN |
| End Nominal Length | 0.185 INCHES FIRST END IN |
| Nominal Outside Diameter | 1.2881 INCHES IN |
| End Nominal Diameter | 0.677 INCHES FIRST END IN |
| Pressure Angle | 14.5000 DEGREES |
| Material | STEEL COMP 410 BODY |
| Material | ALUMINUM ALLOY HUB |
| Mounting Hole Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) AXIALLY THROUGH HUB FIRST END |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.062 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 |
|---|---|
| 8000256 PRIMARY | Us Army Aviation and Missile Command (USA) |
NSN 3020-00-800-0256 is a Gear,spur, manufactured by Us Army Aviation and Missile Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-800-0256 has 1 manufacturer part number on file: 8000256 (Us Army Aviation and Missile Command).
Key specifications for 8000256: Bore Nominal Diameter: 0.523 INCHES BOTH ENDS IN; Teeth Quantity: 80; Body Style: PLAIN, SOLID; Pilot Nominal Diameter: 0.677 INCHES IN. 30 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.