The Valve,oxygen Shutoff, cataloged under National Stock Number 1660-01-004-7764, 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 The Boeing Company Div Defense. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-004-7764 |
| Primary Part Number | ST7M414-1 |
| Item Name | Valve,oxygen Shutoff |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| General Characteristics Item Description | 1.500 IN. W IN |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY THE SOURCE CONTROL DWG NNO. |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | N |
| Part Number | Manufacturer |
|---|---|
| ST7M414-1 | The Boeing Company Div Defense (USA) |
| A51E9203-5 | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 596000-6 | 5/9 Secondary reference U.S. Government activity |
| 596000-10 | 3/3 Design control — primary reference U.S. Government activity |
NSN 1660-01-004-7764 is a Valve,oxygen Shutoff, manufactured by The Boeing Company Div Defense, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-004-7764 has 2 manufacturer part numbers on file: ST7M414-1 (The Boeing Company Div Defense), A51E9203-5 (Northrop Grumman Systems Corporation).
Key specifications for ST7M414-1: General Characteristics Item Description: 1.500 IN. W IN; Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY THE SOURCE CONTROL DWG NNO.. 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 1660-01-004-7764 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.