The Gear,spur, cataloged under National Stock Number 3020-00-992-3544, 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 Dept of Transportation Federal Aviation Administration. Government technical data includes 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-992-3544 |
| Primary Part Number | 473638 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | U S Dept of Transportation Federal Aviation Administration |
| Status | ACTIVE |
| Keyway Nominal Width | 0.063 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.438 INCHES SECOND END IN |
| Hub Nominal Diameter | 0.438 INCHES FIRST END IN |
| Teeth Quantity | 45 |
| Body Style | PLAIN, SOLID |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.063 INCHES BOTH ENDS IN |
| Nominal Overall Length | 0.375 INCHES IN |
| Style Designator | PROTRUDING HUBS |
| Pitch Diameter | 0.8437 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 0.922 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.188 INCHES BOTH ENDS IN |
| Material | STEEL OVERALL |
| Face Nominal Width | 0.250 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 | N |
| Part Number | Manufacturer |
|---|---|
| 473638 | International Business Machines Corp Parts Order Center Dept E - 54 (USA) |
| 473638 PRIMARY | U S Dept of Transportation Federal Aviation Administration (USA) |
| Reference | Meaning |
|---|---|
| 473638 | 5/9 Secondary reference International Business Machines Corporation Dba IBM |
| 473638 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-00-992-3544 is a Gear,spur, manufactured by U S Dept of Transportation Federal Aviation Administration, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-992-3544 has 2 manufacturer part numbers on file: 473638 (International Business Machines Corp Parts Order Center Dept E - 54), 473638 (U S Dept of Transportation Federal Aviation Administration).
Key specifications for 473638: Keyway Nominal Width: 0.063 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.438 INCHES SECOND END IN; Hub Nominal Diameter: 0.438 INCHES FIRST END IN; Teeth Quantity: 45. 16 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 3020-00-992-3544 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.