The Gear,spur, cataloged under National Stock Number 3020-00-790-8409, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 24 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3020-00-790-8409 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.225 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.415 INCHES FIRST END IN |
| Teeth Quantity | 32 |
| Body Style | PLAIN, SOLID |
| Counterbore Nominal Diameter | 1.312 INCHES BOTH ENDS IN |
| Bore Style | W/COUNTERBORE BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.265 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.100 INCHES SECOND END IN |
| First Step Nominal Length | 0.061 INCHES SECOND END IN |
| Nominal Overall Length | 0.480 INCHES IN |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | AMS 6260 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.6000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 1.420 INCHES SECOND END IN |
| Hub Style Designator | 1 STEP SECOND END |
| Hub Style Designator | PINNED FIRST END |
| End Nominal Length | 0.039 INCHES SECOND END IN |
| Nominal Outside Diameter | 1.700 INCHES IN |
| End Nominal Diameter | 1.356 INCHES SECOND END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP E9310 OVERALL |
| Counterbore Nominal Depth | 0.271 INCHES BOTH ENDS IN |
| Face Nominal Width | 0.120 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 131D5002 | D/9 Drawing number reference only General Electric Co Aviation Component Service Center |
| 163857 | 5/9 Secondary reference Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division |
| 131D5002P01 | 3/2 Design control — primary reference U.S. Government activity |
| 131D5002P01 | 5/9 Secondary reference General Electric Company |
| 131D5002 | 5/9 Secondary reference General Electric Company |
NSN 3020-00-790-8409 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-484-8742, 2540-01-521-7958. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-00-790-8409: Bore Nominal Diameter: 1.225 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.415 INCHES FIRST END IN; Teeth Quantity: 32; Body Style: PLAIN, SOLID. 24 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 3020-00-790-8409 has DEMIL Code Q. 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.