The Gear,bevel, cataloged under National Stock Number 3020-00-293-5134, 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 26 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-293-5134 |
| Primary Part Number | 6578506 |
| Item Name | Gear,bevel |
| 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 | 11.000 INCHES BOTH ENDS IN |
| Teeth Quantity | 48 |
| Body Style | PLAIN, SOLID |
| Counterbore Nominal Diameter | 13.2735 INCHES BOTH ENDS IN |
| Pitch Angle | 69.4333 DEGREES |
| Tooth Direction | LEFT |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 12 THREADED AXIALLY THROUGH BODY FIRST END |
| Teeth Type | SPIRAL |
| Hardness Rating | 58.0 ROCKWELL C MINIMUM AND 65.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Overall Length | 2.250 INCHES IN |
| Style Designator | PERIPHERAL FACE, HUBLESS |
| Material Document and Classification | ED STD 66,AISI/SAE 8622H FED STD 5TH MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 15.5000 INCHES NOMINAL IN |
| Mounting Hole Nominal Thread Size | 0.500 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Nominal Outside Diameter | 15.5430 INCHES IN |
| Mounting Hole Thread Quantity Per Inch | 20 AXIALLY THROUGH BODY FIRST END |
| Surface Treatment | COPPER TEETH |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 8622H OVERALL |
| Bolt Hole Circle Nominal Diameter | 12.125 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Counterbore Nominal Depth | 0.531 INCHES BOTH ENDS IN |
| Mounting Hole Thread Series Designator | UNF AXIALLY THROUGH BODY FIRST END |
| Attachment Method | MOUNTING HOLE |
| Body Recess Nominal Depth | 0.3750 INCHES FIRST END IN |
| Face Nominal Width | 2.125 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 6578506 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 0E88 | 3/9 Design control — primary reference U.S. Government activity |
NSN 3020-00-293-5134 is a Gear,bevel, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-293-5134 has 1 manufacturer part number on file: 6578506 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 6578506: Bore Nominal Diameter: 11.000 INCHES BOTH ENDS IN; Teeth Quantity: 48; Body Style: PLAIN, SOLID; Counterbore Nominal Diameter: 13.2735 INCHES BOTH ENDS IN. 26 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.
NSN 3020-00-293-5134 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.