The Plate,retaining,diaphragm, cataloged under National Stock Number 1660-00-377-7328, 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 Boeing Distribution Services X, Inc.. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-00-377-7328 |
| Primary Part Number | S9408-21 |
| Item Name | Plate,retaining,diaphragm |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Boeing Distribution Services X, Inc. |
| Status | ACTIVE |
| FSC Application Data | ACFT PRESSURIZING EQUIP |
| General Characteristics Item Description | ALUMINUM,0.120 IN. LG,1.190 IN. DIA IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| S9408-21 | Boeing Distribution Services X, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 10163007 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| S9408-21 | 5/9 Secondary reference Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
| S9408-21 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1660-00-377-7328 is a Plate,retaining,diaphragm, manufactured by Boeing Distribution Services X, Inc., classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-00-377-7328 has 1 manufacturer part number on file: S9408-21 (Boeing Distribution Services X, Inc.).
Key specifications for S9408-21: FSC Application Data: ACFT PRESSURIZING EQUIP; General Characteristics Item Description: ALUMINUM,0.120 IN. LG,1.190 IN. DIA IN; End Item Identification: 16603375074. 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.
NSN 1660-00-377-7328 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.