The Mask,large, cataloged under National Stock Number 1660-01-633-5233, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 16 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Mask,large |
| FSC / FSG | 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment (FSG 16) |
| Manufacturers | Naval Inventory Control Point Mechanicsburg (CAGE 03950) |
| Parameter | Value |
|---|---|
| NSN | 1660-01-633-5233 |
| Primary Part Number | 7550478-8180849-F3D0 |
| Item Name | Mask,large |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 7550478-8180849-F3D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 8180849-F3 | 5/1 Secondary reference Naval Sea Systems Command |
| 592-8483162-F5 | 5/1 Secondary reference Naval Sea Systems Command |
| 592-8483162-F5D0 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 803139-01-03-EBD0 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| ELECTRIC BOAT P/N 803139-01-03-E | 5/2 Secondary reference U.S. Government activity |
| 803139-01-03-EB | 5/1 Secondary reference U.S. Government activity |
| H5470001-A400-F5D0 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 7383858-A400-F5D0 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| G547-0002-8180849-F3D0 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| H5470001-A400-F5 | 5/1 Secondary reference U.S. Government activity |
| G547-0002-8180849-F3 | 5/1 Secondary reference U.S. Government activity |
| 8180849-F3D0 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| H648-9001-F5D0 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 7550478-8180849-F3 | 3/1 Design control — primary reference Naval Sea Systems Command |
| H648-9001-F5 | 5/1 Secondary reference U.S. Government activity |
| 7383858-A400-F5 | 5/1 Secondary reference Naval Sea Systems Command |
NSN 1660-01-633-5233 is a Mask,large, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-633-5233 has 1 manufacturer part number on file: 7550478-8180849-F3D0 (Naval Inventory Control Point Mechanicsburg).
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 1660-01-633-5233 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.