The Housing,mechanical Drive, cataloged under National Stock Number 3040-00-252-8421, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Leonardo Spa Helicopters Division - Production Site. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3040-00-252-8421 |
| Primary Part Number | 209-011-720-1 |
| Item Name | Housing,mechanical Drive |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Leonardo Spa Helicopters Division - Production Site |
| Status | ACTIVE |
| Material Document and Classification | QQ-A-225/6 T4 FED SPEC SINGLE MATERIAL RESPONSE |
| Material | ALUMINUM ALLOY |
| 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 |
|---|---|
| 209-011-720-1 | Leonardo Spa Helicopters Division - Production Site (ITA) |
| Reference | Meaning |
|---|---|
| 209-011-720-1 | 3/2 Design control — primary reference U.S. Government activity |
| 209-011-720-001 | 5/2 Secondary reference U.S. Government activity |
NSN 3040-00-252-8421 is a Housing,mechanical Drive, manufactured by Leonardo Spa Helicopters Division - Production Site, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-252-8421 has 1 manufacturer part number on file: 209-011-720-1 (Leonardo Spa Helicopters Division - Production Site).
Key specifications for 209-011-720-1: Material Document and Classification: QQ-A-225/6 T4 FED SPEC SINGLE MATERIAL RESPONSE; Special Features: 3.495 IN. OD; 1.127 IN. ID BORE; 1.257 IN. THK; 3 MTG HOLES EQUALLY SPACED 0.284 IN. ID IN; End Item Identification: BELL TEXTRON MODEL AH-1S AND UH-1N HELICOPTERS; Material: ALUMINUM ALLOY. 2 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.