The Gage,compound Pressure-Vacuum,di, cataloged under National Stock Number 6685-00-062-6199, 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 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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 | 6685-00-062-6199 |
| Primary Part Number | 25 1001 T 01B XUC 30INCH/0/30# |
| 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 |
| Scale Accuracy | 2 PCT MIDDLE THIRD OF RANGE BOTH SCALES |
| Scale Name | PRESSURE AND LIQUID OXYGEN |
| Overall Diameter | 2.937 INCHES NOMINAL IN |
| Actuation Type | SINGLE BOURDON TUBE |
| Mounting Method | FLUSH PANEL AND STUD(S) AND BRACKET(S) |
| Scale Inscription/background Color | BLACK FIGURES ON WHITE BACKGROUND BOTH SCALES |
| Scale Smallest Increment | 1.0 INCHES AND 1.0 POUNDS PER SQUARE INCH (PSI) LBS |
| Scale Range | +0.0 TO 30.0 INCHES OF MERCURY AND +0.0 TO 30.0 POUNDS PRESSURE PER SQUARE INCH LBS |
| Stud Location | BACK |
| Stud Quantity | 2 |
| Scale Name for Which Pointer Is Designed | PRESSURE-VACUUM |
| Pointer Type | INDICATING |
| Adjustability | NONADJUSTABLE |
| Scale Type | MULTIPLE |
| Connector Type Vent | NOT PROVIDED |
| Dial Size | 2-1/2 IN. IN |
| Graduation Unit | 10.0 INCHES AND 5.0 POUNDS PER SQUARE INCH LBS |
| Connection Location | BACK |
| Pointer Color | BLACK |
| Surface Treatment | ENAMEL |
| Unable to Decode | UNABLE TO DECODE |
| Material | STEEL CASE |
| Material | GLASS PROTECTIVE CRYSTAL |
| Material | BRONZE ACTUATING ELEMENT |
| Connection Quantity | 1 |
| Bezel Type | SNAP-ON |
| Connection Size | 0.125 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 |
|---|---|
| 25 1001 T 01B XUC 30INCH/0/30# PRIMARY | Ashcroft Inc Dba Heise (USA) |
| Reference | Meaning |
|---|---|
| 1004U30 | 5/9 Secondary reference Ashcroft Inc Dba Heise |
| 25-1001-H-01B-XUC-30PSIVAC | 5/9 Secondary reference Ashcroft Inc Dba Heise |
| 1000U30INCHESVACUUM | 5/9 Secondary reference Ashcroft Inc Dba Heise |
| 50252 | 5/9 Secondary reference Aeroil Products Co Inc |
NSN 6685-00-062-6199 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 6685-00-062-6199 has 1 manufacturer part number on file: 25 1001 T 01B XUC 30INCH/0/30# (Ashcroft Inc Dba Heise).
6 possible matches (shared part number, not a government interchangeability claim): 3110-00-100-3682, 5310-00-126-4012, 3110-00-419-4619. Verify interchangeability with system specifications before substitution.
Key specifications for 25 1001 T 01B XUC 30INCH/0/30#: Scale Accuracy: 2 PCT MIDDLE THIRD OF RANGE BOTH SCALES; Scale Name: PRESSURE AND LIQUID OXYGEN; Overall Diameter: 2.937 INCHES NOMINAL IN; Actuation Type: SINGLE BOURDON TUBE. 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.