The Gage,compound Pressure-Vacuum,di, cataloged under National Stock Number 6685-01-083-2002, 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 Bellofram Corporation. Government technical data includes 28 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6685-01-083-2002 |
| Primary Part Number | J6212 |
| Item Name | Gage,compound Pressure-Vacuum,di |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Bellofram Corporation |
| Status | ACTIVE |
| Scale Accuracy | PORM 2 PCT MIDDLE HALF,PORM 3 PCT REMAINDER |
| Scale Name | PRESSURE-VACUUM |
| Overall Diameter | 2.781 INCHES NOMINAL IN |
| Actuation Type | BOURDON TUBE |
| Mounting Connection Location | BACK |
| Mounting Method | BRACKET(S) AND FLUSH AND STUD(S) |
| Scale Inscription/background Color | BLACK MARKINGS ON WHITE BACKGROUND |
| Scale Smallest Increment | 2.0 INCHES OF MERCURY (INHG) AND 1.0 POUNDS PER SQUARE INCH (PSI) LBS |
| Connection Type | EXTERNAL |
| 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 | ADJUSTABLE |
| Scale Type | SINGLE |
| Connector Type Vent | NOT PROVIDED |
| Dial Size | 2-1/2 IN. DIA IN |
| Graduation Unit | 10.0 INCHES OF MERCURY AND 5.0 POUNDS PER SQUARE INCH LBS |
| Connection Location | BACK, CENTER |
| Pointer Color | BLACK |
| Surface Treatment | ENAMEL |
| Material | STEEL CASE |
| Material | GLASS PROTECTIVE CRYSTAL |
| Material | COPPER ALLOY ACTUATING ELEMENT |
| Connection Quantity | 1 |
| Bezel Type | SNAP-ON |
| Connection Size | 0.250 IN. NPT 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 |
|---|---|
| J6212 | Bellofram Corporation (USA) |
| Reference | Meaning |
|---|---|
| J6212 | 3/9 Design control — primary reference Desco Corp Marsh Bellofram Div |
NSN 6685-01-083-2002 is a Gage,compound Pressure-Vacuum,di, manufactured by Bellofram Corporation, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-083-2002 has 1 manufacturer part number on file: J6212 (Bellofram Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5120-01-399-9054. Verify interchangeability with system specifications before substitution.
Key specifications for J6212: Scale Accuracy: PORM 2 PCT MIDDLE HALF,PORM 3 PCT REMAINDER; Scale Name: PRESSURE-VACUUM; Overall Diameter: 2.781 INCHES NOMINAL IN; Actuation Type: BOURDON TUBE. 28 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.