The Gear,spur, cataloged under National Stock Number 3020-00-040-1166, 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 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-040-1166 |
| Primary Part Number | 8341539 |
| 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 |
| Hub Nominal Diameter | 2.000 INCHES FIRST END IN |
| Teeth Quantity | 22 |
| Body Style | PLAIN, SOLID |
| Bore Style | TAPERED W/KEYWAY SECOND END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.020 INCHES FIRST END IN |
| Hardness Rating | 80.0 ROCKWELL A MINIMUM AND 83.0 ROCKWELL A MAXIMUM OVERALL |
| Nominal Overall Length | 1.000 INCHES IN |
| Style Designator | PROTRUDING HUB |
| Pitch Diameter | 3.6670 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Pressure Angle | 20.0000 DEGREES |
| Face Nominal Width | 0.980 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 |
|---|---|
| 8341539 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| G2808341539 | 5/9 Secondary reference Spalla Inc |
NSN 3020-00-040-1166 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 3020-00-040-1166 has 1 manufacturer part number on file: 8341539 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 8341539: Hub Nominal Diameter: 2.000 INCHES FIRST END IN; Teeth Quantity: 22; Body Style: PLAIN, SOLID; Bore Style: TAPERED W/KEYWAY SECOND END. 12 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.