The Gear,bevel, cataloged under National Stock Number 3020-00-509-9124, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-509-9124 |
| Item Name | Gear,bevel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Keyway Nominal Width | 0.062 INCHES BOTH ENDS0.062 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 0.375 INCHES BOTH ENDS0.375 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.625 INCHES SECOND END0.625 INCHES SECOND END IN |
| Teeth Quantity | 1616 |
| Body Style | PLAIN, SOLIDPLAIN, SOLID |
| Pitch Angle | 45.0000 DEGREES45.0000 DEGREES |
| Bore Style | W/ KEYWAY BOTH ENDSW/ KEYWAY BOTH ENDS |
| Teeth Type | STRAIGHTSTRAIGHT |
| Hardness Rating | 50.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM OVERALL55.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Overall Length | 0.594 INCHES0.594 INCHES IN |
| Style Designator | PERIPHERAL FACE, BACK HUB PROTRUDINGPERIPHERAL FACE, BACK HUB PROTRUDING |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE AND 66 FED STD SINGLE MATERIAL RESPONSE AND AISI/SAE E434H ASSN STD SINGLE MATERIAL RESPONSE OVERALLAISI/SAE E434H ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.0000 INCHES NOMINAL1.0000 INCHES NOMINAL IN |
| Hub Style Designator | PLAIN FIRST ENDPLAIN FIRST END |
| Nominal Outside Diameter | 1.0320 INCHES1.0320 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.2270 INCHES BOTH ENDS0.2270 INCHES BOTH ENDS IN |
| Pressure Angle | 20.0000 DEGREES20.0000 DEGREES |
| Material | STEEL COMP E4340H OVERALL |
| Face Nominal Width | 0.281 INCHES0.281 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 |
| Reference | Meaning |
|---|---|
| 1123 | 5/2 Secondary reference U.S. Government activity |
| A1123 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-509-9124 is a Gear,bevel, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
5 possible matches (shared part number, not a government interchangeability claim): 5210-00-871-2563, 8455-01-618-4117, 8455-01-618-4123. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-00-509-9124: Keyway Nominal Width: 0.062 INCHES BOTH ENDS0.062 INCHES BOTH ENDS IN; Bore Nominal Diameter: 0.375 INCHES BOTH ENDS0.375 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.625 INCHES SECOND END0.625 INCHES SECOND END IN; Teeth Quantity: 1616. 19 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.