The Gage,compound Pressure-Vacuum,di, cataloged under National Stock Number 6685-00-988-0744, 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 Mmc Metrology Lab, Inc. Dba Mmc Metrology Lab Inc. Government technical data includes 27 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-00-988-0744 |
| Primary Part Number | EA243CKFEWBX |
| Item Name | Gage,compound Pressure-Vacuum,di |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Mmc Metrology Lab, Inc. Dba Mmc Metrology Lab Inc |
| Status | ACTIVE |
| Mounting Hole Quantity | 3 |
| Scale Accuracy | 1 PCT ENTIRE RANGE |
| Scale Name | PRESSURE AND PRESSURE-VACUUM |
| Overall Diameter | 5.812 INCHES NOMINAL IN |
| Actuation Type | SINGLE BOURDON TUBE |
| Mounting Method | SURFACE WALL |
| Scale Inscription/background Color | BLACK FIGURES ON WHITE BACKGROUND |
| Scale Smallest Increment | 5.0 INCHES AND 10.0 POUNDS PER SQUARE INCH (PSI) LBS |
| Connection Type | EXTERNAL |
| Scale Range | +0.0 TO 30.0 INCHES OF MERCURY AND +0.0 TO 1000.0 POUNDS PRESSURE PER SQUARE INCH LBS |
| Mounting Hole Diameter | 0.219 INCHES NOMINAL IN |
| Scale Name for Which Pointer Is Designed | PRESSURE-VACUUM |
| Pointer Type | INDICATING AND REFERENCE |
| Adjustability | NONADJUSTABLE OR ADJUSTABLE |
| Scale Type | MULTIPLE |
| Connector Type Vent | NOT PROVIDED |
| Nondefinitive Spec/std Data | A DESIGN AND C TYPE |
| Dial Size | 4-1/2 IN. DIA IN |
| Graduation Unit | 30.0 INCHES AND 100.0 POUNDS PER SQUARE INCH LBS |
| Bolt Circle Diameter | 5.375 INCHES NOMINAL IN |
| Connection Location | BACK |
| Pointer Color | BLACK AND RED |
| Material | STEEL CORROSION RESISTING ACTUATING ELEMENT |
| Material | PLASTIC PROTECTIVE CRYSTAL |
| Material | ALUMINUM CASE |
| Connection Quantity | 1 |
| Connection Size | 0.250 IN. TUBE IN |
| 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 |
|---|---|
| EA243CKFEWBX PRIMARY | Mmc Metrology Lab, Inc. Dba Mmc Metrology Lab Inc (USA) |
| Reference | Meaning |
|---|---|
| SA243CKFEWCX | 5/9 Secondary reference Weksler Glass Thermometer Corp |
| MIL-I-18997/1DEA TYC45-30-1000B | 5/9 Secondary reference U.S. Government activity |
| 78KF14801-54 | 3/9 Design control — primary reference Abb Kent-Taylor Inc |
NSN 6685-00-988-0744 is a Gage,compound Pressure-Vacuum,di, manufactured by Mmc Metrology Lab, Inc. Dba Mmc Metrology Lab Inc, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-00-988-0744 has 1 manufacturer part number on file: EA243CKFEWBX (Mmc Metrology Lab, Inc. Dba Mmc Metrology Lab Inc).
Key specifications for EA243CKFEWBX: Mounting Hole Quantity: 3; Scale Accuracy: 1 PCT ENTIRE RANGE; Scale Name: PRESSURE AND PRESSURE-VACUUM; Overall Diameter: 5.812 INCHES NOMINAL IN. 27 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.