The Adapter,spline, cataloged under National Stock Number 3040-00-672-7478, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 7 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-672-7478 |
| Primary Part Number | 1609999 |
| Item Name | Adapter,spline |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Spline Minor Diameter | 3.875 INCHES NOMINAL IN |
| Spline Type | INTERNAL |
| Teeth Quantity | 27 |
| Outside Diameter | 6.988 INCHES NOMINAL IN |
| Spline Length | 3.750 INCHES NOMINAL IN |
| Spline Major Diameter | 4.125 INCHES NOMINAL IN |
| Material | STEEL |
| 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 |
|---|---|
| BUWEPSDWG1609999 | Bae Systems Land & Armaments L.p. (USA) |
| 1609999 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 3040-00-672-7478 is a Adapter,spline, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-672-7478 has 2 manufacturer part numbers on file: BUWEPSDWG1609999 (Bae Systems Land & Armaments L.p.), 1609999 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 1609999: Spline Minor Diameter: 3.875 INCHES NOMINAL IN; Spline Type: INTERNAL; Teeth Quantity: 27; Outside Diameter: 6.988 INCHES NOMINAL IN. 7 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.