The Meter,flow Rate Indicating, cataloged under National Stock Number 6680-01-201-0640, 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. Government technical data includes 30 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6680-01-201-0640 |
| Item Name | Meter,flow Rate Indicating |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| 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 | SURFACE PANEL |
| Dial Scale Marking Range | +20.0 TO 80.0 |
| Inlet Connection Device Type | STATIONARY |
| Unit Location | RIGHT CENTER FRONT |
| Inlet Connection Size | 0.250 IN. BITE TYPE IN |
| Inlet Connection Type | THREADED |
| Float Quantity | 1 |
| Alarm Signal | NOT INCLUDED |
| Scale Type | DIRECT CAPACITY READING |
| Outlet Connection Size | 0.250 IN. BITE TYPE IN |
| Outlet Connection Device Type | STATIONARY |
| Unit Type | MOUNTED |
| Construction | INCLOSED W/SIGHT WINDOW |
| Outlet Connection Position for Which Designed | HORIZONTAL |
| Meter Type | FLOAT |
| Float Type | FREE |
| Integral Relief Valve | INCLUDED |
| Base | NOT INCLUDED |
| Unable to Decode | UNABLE TO DECODE |
| Carrying Handle | NOT INCLUDED |
| Material | PLASTIC TUBE |
| Media for Which Designed | AIR |
| Integral Heat Source | NOT INCLUDED |
| Dial Scale Reference Pointer | NOT INCLUDED |
| Outlet Connection Type | THREADED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 6185-20 | 3/2 Design control — primary reference U.S. Government activity |
| 6185-20 | 3/9 Design control — primary reference Air Dry Co of America, Llc |
NSN 6680-01-201-0640 is a Meter,flow Rate Indicating, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5130-01-445-4889. Verify interchangeability with system specifications before substitution.
Key specifications for 6680-01-201-0640: Scale Quantity: 1; Inlet Connection Position for Which Designed: HORIZONTAL; Spinning Float: NOT INCLUDED; Design Type: CASE. 30 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.