The Meter,flow Rate Indicating, cataloged under National Stock Number 6680-00-009-0664, is classified within Federal Supply Class 6680 (Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Electronic Systems. Government technical data includes 29 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 6680-00-009-0664 |
| Primary Part Number | 990C030H01 |
| Item Name | Meter,flow Rate Indicating |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Northrop Grumman Systems Corporation Dba Electronic Systems |
| Status | ACTIVE |
| Scale Quantity | 1 |
| Inlet Connection Position for Which Designed | HORIZONTAL |
| Spinning Float | NOT INCLUDED |
| Design Type | CASE |
| Integral Pulsation Dampener | NOT INCLUDED |
| Mounting Method | FLUSH PANEL |
| Dial Scale Marking Range | +0.0 TO 4.0 |
| Guide Type | BEADED TUBE |
| Inlet Connection Device Type | STATIONARY |
| Inlet Connection Size | 0.750 IN. NPT IN |
| Float Quantity | 1 |
| Alarm Signal | NOT INCLUDED |
| Scale Type | DIRECT CAPACITY READING |
| Outlet Connection Size | 0.750IN. NPT IN |
| Outlet Connection Device Type | STATIONARY |
| Unit Type | MOUNTED |
| Construction | INCLOSED W/SIGHT WINDOW |
| Outlet Connection Position for Which Designed | HORIZONTAL |
| Meter Type | FLOAT |
| Integral Relief Valve | NOT INCLUDED |
| Base | NOT INCLUDED |
| Unable to Decode | UNABLE TO DECODE |
| Carrying Handle | NOT INCLUDED |
| Maximum Working Pressure | 180.0 POUNDS PER SQUARE INCH (PSI) LBS |
| Material | GLASS TUBE |
| Material | STEEL CORROSION RESISTING FLOAT |
| Media for Which Designed | COOLANOL 20 |
| Integral Heat Source | NOT INCLUDED |
| Dial Scale Reference Pointer | NOT INCLUDED |
| 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 |
|---|---|
| 990C030H01 PRIMARY | Northrop Grumman Systems Corporation Dba Electronic Systems (USA) |
| Reference | Meaning |
|---|---|
| 10A1735860SZ | 5/9 Secondary reference Fischer and Porter Co |
NSN 6680-00-009-0664 is a Meter,flow Rate Indicating, manufactured by Northrop Grumman Systems Corporation Dba Electronic Systems, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-00-009-0664 has 1 manufacturer part number on file: 990C030H01 (Northrop Grumman Systems Corporation Dba Electronic Systems).
Key specifications for 990C030H01: Scale Quantity: 1; Inlet Connection Position for Which Designed: HORIZONTAL; Spinning Float: NOT INCLUDED; Design Type: CASE. 29 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.