The Gear,spur, cataloged under National Stock Number 3020-01-436-3390, 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 Palfinger Marine Usa, Llc. Government technical data includes 19 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-436-3390 |
| Primary Part Number | D408427-D |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Palfinger Marine Usa, Llc |
| Status | ACTIVE |
| Keyway Nominal Width | 12.0 MILLIMETERS SECOND END MM |
| Keyway Nominal Width | 0.500 INCHES FIRST END IN |
| Bore Nominal Diameter | 40.0 MILLIMETERS SECOND END MM |
| Bore Nominal Diameter | 1.875 INCHES FIRST END IN |
| Hub Nominal Diameter | 76.0 MILLIMETERS SECOND END MM |
| Teeth Quantity | 28 |
| Body Style | PLAIN, SOLID |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 35.0 MILLIMETERS SECOND END MM |
| Style Designator | PROTRUDING HUB |
| Pitch Diameter | 76.0 MILLIMETERS NOMINAL MM |
| Tooth Form | STUB |
| Hub Style Designator | PLAIN SECOND END |
| Nominal Outside Diameter | 75.0 MILLIMETERS MM |
| Nominal Distance From Bore Center to Keyway Bottom | 25.62 MILLIMETERS SECOND END MM |
| Nominal Distance From Bore Center to Keyway Bottom | 1.043 INCHES FIRST END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL OVERALL |
| Face Nominal Width | 85.0 MILLIMETERS MM |
| 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 |
|---|---|
| M901280 | Palfinger Marine Usa, Llc (USA) |
| D408427-D PRIMARY | Palfinger Marine Usa, Llc (USA) |
| Reference | Meaning |
|---|---|
| M901280 | 5/9 Secondary reference U.S. Government activity |
| D408427 | D/9 Drawing number reference only U.S. Government activity |
| D408427-D | 5/9 Secondary reference U.S. Government activity |
NSN 3020-01-436-3390 is a Gear,spur, manufactured by Palfinger Marine Usa, Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-436-3390 has 2 manufacturer part numbers on file: M901280 (Palfinger Marine Usa, Llc), D408427-D (Palfinger Marine Usa, Llc).
1 possible match (shared part number, not a government interchangeability claim): 3950-01-436-7195. Verify interchangeability with system specifications before substitution.
Key specifications for D408427-D: Keyway Nominal Width: 12.0 MILLIMETERS SECOND END MM; Keyway Nominal Width: 0.500 INCHES FIRST END IN; Bore Nominal Diameter: 40.0 MILLIMETERS SECOND END MM; Bore Nominal Diameter: 1.875 INCHES FIRST END IN. 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.