The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-00-753-2298, 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28 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6685-00-753-2298 |
| Item Name | Gage,pressure,dial Indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Status | ACTIVE |
| Mounting Hole Quantity | 3 |
| Scale Accuracy | 1 PCT ACCURACY FOR MIDDLE THIRD SCALE,2 PCT OVER REMAINDER OF SCALE |
| Scale Name | PRESSURE |
| Overall Diameter | 4.750 INCHES NOMINAL IN |
| Actuation Type | SINGLE BOURDON TUBE |
| Mounting Method | SURFACE WALL |
| Scale Inscription/background Color | BLACK FIGURES ON WHITE BACKGROUND |
| Scale Smallest Increment | 1.0 POUNDS LBS |
| Connection Type | EXTERNAL |
| Scale Range | +0.000 TO 160.000 POUNDS PRESSURE PER SQUARE INCH LBS |
| Mounting Hole Diameter | 0.156 INCHES NOMINAL IN |
| Pointer Type | INDICATING |
| Adjustability | ADJUSTABLE |
| Scale Type | SINGLE |
| Connector Type Vent | NOT PROVIDED |
| Nondefinitive Spec/std Data | 1 TYPE AND 1 COMPOSITION |
| Dial Size | 3-1/2 |
| Graduation Unit | 20.0 POUNDS LBS |
| Bolt Circle Diameter | 4.500 INCHES NOMINAL IN |
| Connection Location | LOWER |
| Pointer Color | BLACK |
| Surface Treatment | ENAMEL CASE |
| Material | BRONZE ACTUATING ELEMENT |
| Material | COPPER ALLOY AND PLASTIC CASE |
| Material | PLASTIC PROTECTIVE CRYSTAL |
| Connection Quantity | 1 |
| Bezel Type | SNAP-ON |
| Connection Size | 1/4 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 |
| Reference | Meaning |
|---|---|
| B6139-0-160 | 3/2 Design control — primary reference U.S. Government activity |
| MILG18997TYPE1C0MP0SITI0N1 | 4/1 Identification reference U.S. Government activity |
NSN 6685-00-753-2298 is a Gage,pressure,dial Indicating, 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): 6685-00-807-9647. Verify interchangeability with system specifications before substitution.
Key specifications for 6685-00-753-2298: Mounting Hole Quantity: 3; Scale Accuracy: 1 PCT ACCURACY FOR MIDDLE THIRD SCALE,2 PCT OVER REMAINDER OF SCALE; Scale Name: 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.