The Gear,spur, cataloged under National Stock Number 3020-00-679-4972, 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 14 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-679-4972 |
| Primary Part Number | 8682820 |
| 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 |
| Teeth Quantity | 33 |
| Body Style | PLAIN, SOLID |
| First Step Nominal Length | 0.250 INCHES FIRST END IN |
| Mounting Hole Nominal Diameter | 0.590 INCHES AXIALLY THROUGH FLANGE IN |
| Hardness Rating | 58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Overall Length | 3.810 INCHES IN |
| Style Designator | PROTRUDING HUB |
| Pitch Diameter | 4.1250 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Spline Quantity | 15 BOTH ENDS |
| Nominal Outside Diameter | 4.375 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Bolt Hole Circle Nominal Diameter | 7.000 INCHES AXIALLY THROUGH FLANGE IN |
| Attachment Method | MOUNTING HOLE |
| 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 |
|---|---|
| 8682820 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 587494 | Renk America Llc Div Renk America (USA) |
| Reference | Meaning |
|---|---|
| 3020006794972 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 3020-00-679-4972 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 3020-00-679-4972 has 2 manufacturer part numbers on file: 8682820 (U S Army Tank Automotive Command Amsta-Im-Mm), 587494 (Renk America Llc Div Renk America).
Key specifications for 8682820: Teeth Quantity: 33; Body Style: PLAIN, SOLID; First Step Nominal Length: 0.250 INCHES FIRST END IN; Mounting Hole Nominal Diameter: 0.590 INCHES AXIALLY THROUGH FLANGE IN. 14 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.