The Gear,spur, cataloged under National Stock Number 3020-00-301-7446, 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 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-301-7446 |
| Primary Part Number | 8392319 |
| 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 | 3.250 INCHES FIRST END IN |
| Hub Nominal Diameter | 3.250 INCHES SECOND END IN |
| Teeth Quantity | 24 |
| Body Style | WEBBED, SOLID |
| Bore Style | STRAIGHT SPLINE BOTH ENDS |
| Hardness Rating | 58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | FLUSH HUB |
| Material Document and Classification | 66,AISI/SAE 8720 FED STD 1ST MATERIAL RESPONSE AND 66,AISI/SAE 8620 FED STD 2ND MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 8.0000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Spline Quantity | 6 BOTH ENDS |
| Nominal Outside Diameter | 8.500 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 8720 AND STEEL COMP 8620 OVERALL |
| Face Nominal Width | 1.750 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 |
|---|---|
| 8392319 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 21A1400 | 5/9 Secondary reference Paccar Government Group Co Yarrow Bay Office Pk |
NSN 3020-00-301-7446 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 3020-00-301-7446 has 1 manufacturer part number on file: 8392319 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 8392319: Hub Nominal Diameter: 3.250 INCHES FIRST END IN; Hub Nominal Diameter: 3.250 INCHES SECOND END IN; Teeth Quantity: 24; Body Style: WEBBED, SOLID. 16 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.