The Gage,differential,dial Indicatin, cataloged under National Stock Number 6685-01-083-6328, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 28 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6685-01-083-6328 |
| Item Name | Gage,differential,dial Indicatin |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Status | ACTIVE |
| Mounting Hole Quantity | 3 |
| Scale Accuracy | 2 PCT OF FULL RANGE |
| Scale Name | DIFFERENTIAL PRESSURE |
| Overall Diameter | 4.750 INCHES NOMINAL IN |
| Actuation Type | DIAPHRAGM |
| Mounting Method | FLUSH OR SURFACE |
| Scale Inscription/background Color | BLACK MARKINGS ON WHITE BACKGROUND |
| Scale Smallest Increment | 0.02 INCHES IN |
| Connection Type | INTERNAL |
| Scale Range | +0.0 TO 1.0 INCHES OF WATER IN |
| Mounting Hole Diameter | 0.250 INCHES NOMINAL IN |
| Pointer Type | INDICATING |
| Adjustability | ADJUSTABLE |
| Scale Type | SINGLE |
| Connector Type Vent | NOT PROVIDED |
| Dial Size | 4 IN. DIA IN |
| Graduation Unit | 0.2 INCHES IN |
| Bolt Circle Diameter | 4.125 INCHES NOMINAL IN |
| Connection Location | BACK AND SIDE |
| Pointer Color | ALUMINUM |
| Surface Treatment | POWDER COATED CASE |
| Material | RUBBER SILICONE CLASS Q ACTUATING ELEMENT |
| Material | PLASTIC PROTECTIVE CRYSTAL |
| Material | ALUMINUM CASE |
| Material | ALUMINUM LOCATION NOT OTHERWISE SPECIFIED |
| Connection Quantity | 4 |
| Bezel Type | THREAD |
| 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 |
| Reference | Meaning |
|---|---|
| 12-700060-00 | 5/2 Secondary reference U.S. Government activity |
| 2001-LT | 3/2 Design control — primary reference U.S. Government activity |
NSN 6685-01-083-6328 is a Gage,differential,dial Indicatin, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6685-01-406-2049. Verify interchangeability with system specifications before substitution.
Key specifications for 6685-01-083-6328: Mounting Hole Quantity: 3; Scale Accuracy: 2 PCT OF FULL RANGE; Scale Name: DIFFERENTIAL PRESSURE; Overall Diameter: 4.750 INCHES NOMINAL IN. 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.