The Indicator,sight,liquid, cataloged under National Stock Number 6680-01-113-8946, 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 Dsp Enterprises, Inc.. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6680-01-113-8946 |
| Primary Part Number | EMS-4816 |
| Item Name | Indicator,sight,liquid |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Dsp Enterprises, Inc. |
| Status | ACTIVE |
| Furnished Data | LIQUID FLOW |
| Nominal Pipe Size for Which Designed | UNABLE TO DECODE |
| Data Furnishing Method | ROTOR |
| End Connection Type | UNABLE TO DECODE |
| Style Designator | DOUBLE PORT |
| Thread Direction | UNABLE TO DECODE |
| Nominal Thread Size | UNABLE TO DECODE |
| Maximum Temp Rating | 450.0 FAHRENHEIT DEGF |
| Media for Which Designed | ANY ACCEPTABLE |
| Maximum Working Pressure | 75.0 POUNDS PER SQUARE INCH (PSI) LBS |
| Thread Quantity Per Inch | UNABLE TO DECODE |
| Material | COPPER ALLOY |
| Thread Series Designator | UNABLE TO DECODE |
| Sight Diameter | 1.750 INCHES NOMINAL IN |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY MATERIAL AND NOMINAL PIPE SIZE FOR WHICH DESIGNED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| EMS-4816 | Dsp Enterprises, Inc. (USA) |
| EMS-4816 | Clark-Reliance Llc (USA) |
| EMS-4816 | Wbb, Inc. (USA) |
| Reference | Meaning |
|---|---|
| E-57-3 | 3/9 Design control — primary reference Ernst Flow Industries |
| E-57-3 1IN BRONZE | 5/9 Secondary reference Ernst Flow Industries |
NSN 6680-01-113-8946 is a Indicator,sight,liquid, manufactured by Dsp Enterprises, Inc., classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-01-113-8946 has 3 manufacturer part numbers on file: EMS-4816 (Dsp Enterprises, Inc.), EMS-4816 (Clark-Reliance Llc), EMS-4816 (Wbb, Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 6680-01-114-0176, 5950-01-138-8945. Verify interchangeability with system specifications before substitution.
Key specifications for EMS-4816: Overall Height: 4.250 INCHES NOMINAL IN; Furnished Data: LIQUID FLOW; Nominal Pipe Size for Which Designed: UNABLE TO DECODE; Data Furnishing Method: ROTOR. 15 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 6680-01-113-8946 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.