The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-01-113-8985, 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 24 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-113-8985 |
| Primary Part Number | E3478 |
| Item Name | Gage,pressure,dial Indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Bellofram Corporation |
| Status | ACTIVE |
| Scale Accuracy | 1/2 OF 1 PCT ENTIRE RANGE |
| Scale Name | PRESSURE |
| Overall Diameter | 5.312 INCHES NOMINAL IN |
| Actuation Type | SINGLE BOURDON TUBE |
| Mounting Method | PANEL |
| Scale Inscription/background Color | BLACK FIGURES ON WHITE BACKGROUND |
| Scale Smallest Increment | 25.0 POUNDS PER SQUARE INCH (PSI) LBS |
| Connection Type | EXTERNAL |
| Scale Range | +0.0 TO 3000.0 POUNDS PRESSURE PER SQUARE INCH LBS |
| Pointer Type | INDICATING |
| Adjustability | ADJUSTABLE |
| Scale Type | SINGLE |
| Connector Type Vent | NOT PROVIDED |
| Dial Size | 4-1/2 IN. DIA IN |
| Graduation Unit | 300.0 POUNDS PER SQUARE INCH LBS |
| Connection Location | BACK, LOWER |
| Pointer Color | BLACK |
| Surface Treatment | ENAMEL CASE |
| Material | STEEL CASE |
| Material | NICKEL ALLOY ACTUATING ELEMENT |
| Material | GLASS PROTECTIVE CRYSTAL |
| 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 |
|---|---|
| E3478 | Bellofram Corporation (USA) |
| Reference | Meaning |
|---|---|
| E3478 | 3/9 Design control — primary reference Desco Corp Marsh Bellofram Div |
NSN 6685-01-113-8985 is a Gage,pressure,dial Indicating, manufactured by Bellofram Corporation, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-113-8985 has 1 manufacturer part number on file: E3478 (Bellofram Corporation).
Key specifications for E3478: Scale Accuracy: 1/2 OF 1 PCT ENTIRE RANGE; Scale Name: PRESSURE; Overall Diameter: 5.312 INCHES NOMINAL IN; Actuation Type: SINGLE BOURDON TUBE. 24 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.