The Gage,vacuum,indicating, cataloged under National Stock Number 6685-01-047-5138, 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 26 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-047-5138 |
| Item Name | Gage,vacuum,indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Status | ACTIVE |
| Mounting Hole Quantity | 3 |
| Scale Accuracy | PORM 1 PCT OF SCALE RANGE |
| Scale Name | VACUUM |
| Overall Diameter | 5.750 INCHES NOMINAL IN |
| Actuation Type | BOURDON TUBE |
| Mounting Method | STRAIGHT PIPE THREAD |
| Scale Inscription/background Color | WHITE BACKGROUND,BLACK GRADUATIONS AND MARKINGS |
| Scale Smallest Increment | 0.5 INCHES OF MERCURY (INHG) IN |
| Connection Type | EXTERNAL |
| Scale Range | +0.0 TO 30.0 INCHES OF MERCURY IN |
| Mounting Hole Diameter | 0.219 INCHES NOMINAL IN |
| Pointer Type | INDICATING AND REFERENCE |
| Adjustability | ADJUSTABLE |
| Scale Type | SINGLE |
| Connector Type Vent | NOT PROVIDED |
| Dial Size | 4-1/2 IN. DIA IN |
| Graduation Unit | 5.0 INCHES OF MERCURY IN |
| Bolt Circle Diameter | 5.375 INCHES NOMINAL IN |
| Connection Location | BACK |
| Pointer Color | BLACK |
| Surface Treatment | ENAMEL CASE |
| Material | NICKEL ALLOY ACTUATING ELEMENT |
| Material | PLASTIC PROTECTIVE CRYSTAL |
| Material | ALUMINUM CASE |
| Connection Quantity | 1 |
| Connection Size | 0.438-20 UNF |
| 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 |
|---|---|
| MIL-I-18997 | 4/1 Identification reference U.S. Government activity |
NSN 6685-01-047-5138 is a Gage,vacuum,indicating, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
Key specifications for 6685-01-047-5138: Mounting Hole Quantity: 3; Scale Accuracy: PORM 1 PCT OF SCALE RANGE; Scale Name: VACUUM; Overall Diameter: 5.750 INCHES NOMINAL IN. 26 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.