The Gage,compound Pressure-Vacuum,di, cataloged under National Stock Number 6685-01-148-4588, 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 Moeller Instrument Company, Inc. Dba Moeller Instrument Co. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-148-4588 |
| Primary Part Number | SCT4M3Y |
| Item Name | Gage,compound Pressure-Vacuum,di |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Moeller Instrument Company, Inc. Dba Moeller Instrument Co |
| Status | ACTIVE |
| Mounting Hole Quantity | 3 |
| Scale Accuracy | PORM 1/2 OF 1 PCT FULL SCALE |
| Scale Name | PRESSURE-VACUUM |
| Overall Diameter | 5.875 INCHES NOMINAL IN |
| Actuation Type | BOURDON TUBE |
| Mounting Method | FLANGE |
| Scale Inscription/background Color | BLACK MARKINGS ON WHITE BACKGROUND |
| Scale Smallest Increment | 1.0 INCHES AND 1.0 POUNDS PER SQUARE INCH (PSI) LBS |
| Connection Type | EXTERNAL |
| Scale Range | +0.0 TO 30.0 INCHES AND +0.0 TO 60.0 POUNDS PRESSURE PER SQUARE INCH LBS |
| Mounting Hole Diameter | 0.203 INCHES NOMINAL IN |
| Pointer Type | INDICATING |
| Adjustability | ADJUSTABLE |
| Scale Type | SINGLE |
| Connector Type Vent | NOT PROVIDED |
| Dial Size | 4-1/2 IN. DIA IN |
| Graduation Unit | 10.0 INCHES AND 10.0 POUNDS PER SQUARE INCH LBS |
| Bolt Circle Diameter | 5.375 INCHES NOMINAL IN |
| Connection Location | LOWER RIGHT HAND SIDE |
| Pointer Color | BLACK |
| Surface Treatment | ENAMEL CASE |
| Material | PLASTIC PROTECTIVE CRYSTAL |
| Material | ALUMINUM CASE |
| Material | NICKEL ALLOY AND COPPER ALLOY AND ALUMINUM ALLOY ACTUATING ELEMENT |
| Connection Quantity | 1 |
| Bezel Type | SLIPS-ON |
| Connection Size | 0.250 IN. NPT DIA 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 |
|---|---|
| SCT4M3Y PRIMARY | Moeller Instrument Company, Inc. Dba Moeller Instrument Co (USA) |
| Reference | Meaning |
|---|---|
| 850-7965 | 5/9 Secondary reference Aqua-Chem, Inc. |
| 850-7965 | C/1 Advisory reference — outside the item-of-supply concept Aqua-Chem, Inc. Dba Aqua-Chem Inc |
NSN 6685-01-148-4588 is a Gage,compound Pressure-Vacuum,di, manufactured by Moeller Instrument Company, Inc. Dba Moeller Instrument Co, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-148-4588 has 1 manufacturer part number on file: SCT4M3Y (Moeller Instrument Company, Inc. Dba Moeller Instrument Co).
Key specifications for SCT4M3Y: Mounting Hole Quantity: 3; Scale Accuracy: PORM 1/2 OF 1 PCT FULL SCALE; Scale Name: PRESSURE-VACUUM; Overall Diameter: 5.875 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.