The Gear,bevel, cataloged under National Stock Number 3020-00-797-9023, 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 21 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-797-9023 |
| Primary Part Number | 7979023 |
| 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 |
| Keyway Nominal Width | 0.190 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 1.004 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 2.375 INCHES SECOND END IN |
| Teeth Quantity | 27 |
| Body Style | WEBBED, OFFSET, SOLID |
| Pitch Angle | 57.8000 DEGREES |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 1.094 INCHES SECOND END IN |
| Teeth Type | STRAIGHT |
| Hardness Rating | 16.0 ROCKWELL C MINIMUM AND 22.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Overall Length | 1.766 INCHES IN |
| Style Designator | SIDE FACE, BACK HUB PROTRUDING |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE AND AISI/SAE 1040 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 3.3750 INCHES NOMINAL IN |
| Hub Style Designator | PLAIN SECOND END |
| Nominal Outside Diameter | 3.374 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.592 INCHES BOTH ENDS IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 1040 OVERALL |
| Body Recess Nominal Depth | 0.423 INCHES FIRST END IN |
| Face Nominal Width | 0.620 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 |
|---|---|
| 7979023 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 278524 | 5/9 Secondary reference Fruehauf Corp |
NSN 3020-00-797-9023 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 3020-00-797-9023 has 1 manufacturer part number on file: 7979023 (U S Army Tank Automotive Command Amsta-Im-Mm).
1 possible match (shared part number, not a government interchangeability claim): 5930-00-919-0133. Verify interchangeability with system specifications before substitution.
Key specifications for 7979023: Keyway Nominal Width: 0.190 INCHES BOTH ENDS IN; Bore Nominal Diameter: 1.004 INCHES BOTH ENDS IN; Hub Nominal Diameter: 2.375 INCHES SECOND END IN; Teeth Quantity: 27. 21 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.