The Gage,vacuum,indicating, cataloged under National Stock Number 6685-00-779-3598, 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 29 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-00-779-3598 |
| Primary Part Number | 62FM1-4LBM30RB |
| Item Name | Gage,vacuum,indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Bellofram Corporation |
| Status | ACTIVE |
| Mounting Hole Quantity | 3 |
| Scale Accuracy | 2 PCT ENTIRE RANGE |
| Scale Name | VACUUM |
| Overall Diameter | 7.688 INCHES NOMINAL IN |
| Actuation Type | SINGLE BOURDON TUBE |
| Mounting Method | FLUSH PANEL |
| Scale Inscription/background Color | BLACK FIGURES ON WHITE BACKGROUND |
| Scale Smallest Increment | 1.0 INCHES IN |
| Connection Type | EXTERNAL |
| Scale Range | +0.000 TO 30.000 INCHES OF MERCURY IN |
| Mounting Hole Diameter | 0.219 INCHES NOMINAL IN |
| Pointer Type | INDICATING |
| Adjustability | ADJUSTABLE |
| Scale Type | SINGLE |
| Connector Type Vent | NOT PROVIDED |
| Dial Size | 6 IN. DIA IN |
| Graduation Unit | 5.0 INCHES IN |
| Bolt Circle Diameter | 7.000 INCHES NOMINAL IN |
| Pointer Color | BLACK |
| Surface Treatment | ENAMEL CASE |
| Surface Treatment | CHROMIUM LOCATION NOT OTHERWISE SPECIFIED |
| Unable to Decode | UNABLE TO DECODE |
| Material | STEEL CASE |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Material | GLASS PROTECTIVE CRYSTAL |
| Material | COPPER ALLOY ACTUATING ELEMENT |
| Connection Quantity | 1 |
| Bezel Type | THREAD |
| Connection Size | 0.250 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 |
|---|---|
| 62FM1-4LBM30RB | Bellofram Corporation (USA) |
| 2 | Bellofram Corporation (USA) |
| Reference | Meaning |
|---|---|
| 62FM1-4LBM30RB | 3/9 Design control — primary reference Desco Corp Marsh Bellofram Div |
| 7907329 | 7/2 Vendor item drawing reference Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| 2 | 5/9 Secondary reference Desco Corp Marsh Bellofram Div |
NSN 6685-00-779-3598 is a Gage,vacuum,indicating, manufactured by Bellofram Corporation, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-00-779-3598 has 2 manufacturer part numbers on file: 62FM1-4LBM30RB (Bellofram Corporation), 2 (Bellofram Corporation).
Key specifications for 62FM1-4LBM30RB: Mounting Hole Quantity: 3; Scale Accuracy: 2 PCT ENTIRE RANGE; Scale Name: VACUUM; Overall Diameter: 7.688 INCHES NOMINAL IN. 29 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.