The Gage,liquid Oxygen Content,dial, cataloged under National Stock Number 6685-01-331-5678, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-331-5678 |
| Primary Part Number | 1779AS103-1 |
| Item Name | Gage,liquid Oxygen Content,dial |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Mounting Hole Quantity | 3 |
| Scale Name | OXYGEN |
| Overall Diameter | 6.090 INCHES NOMINAL IN |
| Mounting Connection Location | LOWER RIGHT HAND SIDE AND LOWER REAR LEFT SIDE AND TOP CENTER |
| Mounting Method | HOLE |
| Scale Smallest Increment | 0.5 POUNDS PER SQUARE INCH (PSI) LBS |
| Scale Range | +0.0 TO 60.0 POUNDS PER SQUARE INCH LBS |
| Mounting Hole Diameter | 0.219 INCHES NOMINAL IN |
| Pointer Type | REFERENCE |
| Scale Type | CIRCULAR |
| Graduation Unit | 1.0 POUNDS PER SQUARE INCH LBS |
| Material | ALUMINUM CASE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1779AS103-1 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 3305514-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 6685-01-331-5678 is a Gage,liquid Oxygen Content,dial, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-331-5678 has 1 manufacturer part number on file: 1779AS103-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 1779AS103-1: Mounting Hole Quantity: 3; Scale Name: OXYGEN; Overall Diameter: 6.090 INCHES NOMINAL IN; Mounting Connection Location: LOWER RIGHT HAND SIDE AND LOWER REAR LEFT SIDE AND TOP CENTER. 12 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.