The Gage,compound Pressure-Vacuum,di, cataloged under National Stock Number 6685-01-054-3728, 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 Ashcroft Inc Dba Heise. Government technical data includes 20 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6685-01-054-3728 |
| Primary Part Number | EA243CDFRWB0 |
| Item Name | Gage,compound Pressure-Vacuum,di |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Ashcroft Inc Dba Heise |
| Status | ACTIVE |
| Mounting Hole Quantity | 1 |
| Scale Accuracy | PORM 1 PCT OF SCALE RANGE |
| Scale Name | PRESSURE AND VACUUM |
| Overall Diameter | 6.000 INCHES NOMINAL IN |
| Actuation Type | BOURDON TUBE |
| Mounting Method | FLUSH PANEL |
| Scale Inscription/background Color | WHITE BACKGROUND,BLACK GRADUATIONS AND MARKINGS |
| Scale Smallest Increment | 1.0 POUNDS PER SQUARE INCH (PSI) AND 1.0 INCHES OF MERCURY (INHG) LBS |
| Connection Type | EXTERNAL |
| Scale Range | +0.0 TO 100.0 POUNDS PRESSURE PER SQUARE INCH AND +0.0 TO 30.0 INCHES OF MERCURY LBS |
| Mounting Hole Diameter | 5.594 INCHES NOMINAL IN |
| Scale Type | MULTIPLE |
| Connector Type Vent | NOT PROVIDED |
| Dial Size | 4-1/2 IN. DIA IN |
| Graduation Unit | 10.0 POUNDS PER SQUARE INCH AND 10.0 INCHES OF MERCURY LBS |
| Connection Location | BACK |
| Pointer Color | BLACK |
| Surface Treatment | ANODIZE AND ENAMEL CASE |
| Connection Quantity | 1 |
| Connection Size | 0.438-20 UNF |
| 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 |
|---|---|
| EA243CDFRWB0 PRIMARY | Ashcroft Inc Dba Heise (USA) |
| G27-80 | Weksler Glass Thermometer Corp (USA) |
| Reference | Meaning |
|---|---|
| SA24-3CDF-RWB0 | 3/1 Design control — primary reference Weksler Glass Thermometer Corp |
| 19-10-4083 | 5/2 Secondary reference U.S. Government activity |
| EA24-3CDF-RWB0 | 5/9 Secondary reference Mmc Metrology Lab, Inc. Dba Mmc Metrology Lab Inc |
NSN 6685-01-054-3728 is a Gage,compound Pressure-Vacuum,di, manufactured by Ashcroft Inc Dba Heise, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-054-3728 has 2 manufacturer part numbers on file: EA243CDFRWB0 (Ashcroft Inc Dba Heise), G27-80 (Weksler Glass Thermometer Corp).
1 possible match (shared part number, not a government interchangeability claim): 6685-01-450-5492. Verify interchangeability with system specifications before substitution.
Key specifications for EA243CDFRWB0: Mounting Hole Quantity: 1; Scale Accuracy: PORM 1 PCT OF SCALE RANGE; Scale Name: PRESSURE AND VACUUM; Overall Diameter: 6.000 INCHES NOMINAL IN. 20 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.