The Gear,spur, cataloged under National Stock Number 3020-00-620-9509, 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 U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 27 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 | 3020-00-620-9509 |
| Primary Part Number | 6209509 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.939 INCHES BOTH ENDS IN |
| Teeth Quantity | 56 |
| Body Style | WEBBED, OFFSET, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.025 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.584 INCHES FIRST END IN |
| First Step Nominal Length | 0.219 INCHES FIRST END IN |
| Hardness Rating | 23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM TEETH |
| Nominal Overall Length | 1.233 INCHES IN |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | MIL-S-13048,FS-1335,FS-3135 OR FS-8635 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 4.6660 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 2.750 INCHES FIRST END IN |
| Hub Style Designator | 1 STEP FIRST END |
| Hub Style Designator | 1 GROOVE SECOND END |
| End Nominal Length | 0.365 INCHES FIRST END IN |
| Nominal Outside Diameter | 4.829 INCHES IN |
| Surface Treatment | CADMIUM OVERALL |
| Nominal Distance From End to First Groove | 0.344 INCHES SECOND END IN |
| End Nominal Diameter | 1.187 INCHES FIRST END IN |
| End Nominal Diameter | 1.411 INCHES SECOND END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL OVERALL |
| First Groove Nominal Diameter | 1.180 INCHES SECOND END IN |
| First Groove Nominal Width | 0.170 INCHES SECOND END IN |
| Face Nominal Width | 0.612 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 |
|---|---|
| 6209509 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 3020-00-620-9509 is a Gear,spur, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-620-9509 has 1 manufacturer part number on file: 6209509 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 6209509: Bore Nominal Diameter: 0.939 INCHES BOTH ENDS IN; Teeth Quantity: 56; Body Style: WEBBED, OFFSET, SOLID; Bore Style: PLAIN BOTH ENDS. 27 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.