The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-01-520-3520, 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 18 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-520-3520 |
| Item Name | Gage,pressure,dial Indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Status | ACTIVE |
| Scale Name | INCHES OF WATER AND POUNDS PRESSURE |
| Actuation Type | BOURDON TUBE |
| Mounting Method | THREADED BOSS |
| Scale Smallest Increment | 5.0 INCHES AND 2.0 POUNDS PER SQUARE INCH (PSI) LBS |
| Connection Type | EXTERNAL |
| Scale Range | +0.0 TO 30.0 INCHES AND +0.0 TO 200.0 POUNDS PER SQUARE INCH LBS |
| Pointer Type | INDICATING |
| Adjustability | ADJUSTABLE |
| Scale Type | DIAL |
| Connector Type Vent | NOT PROVIDED |
| Dial Size | 4-1/2 IN DIA IN |
| Graduation Unit | 30.0 INCHES AND 20.0 POUNDS PER SQUARE INCH LBS |
| Connection Location | BACK, LOWER |
| Pointer Color | RED |
| Material | NICKEL ALLOY ACTUATING ELEMENT |
| Material | ALUMINUM CASE |
| Connection Quantity | 1 |
| Connection Size | 9/16-18 UNF-3A UNION "O"RING TYPE, WITH "O" RING, TAILPIECE AND UNION NUT A |
| 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 |
|---|---|
| SC4MN2HCWRANA | 2/2 Government specification standardization U.S. Government activity |
| MIL-G-18997E | 4/1 Identification reference U.S. Government activity |
| EA243L8PRWBX | 5/1 Secondary reference Ashcroft Inc Dba Heise |
NSN 6685-01-520-3520 is a Gage,pressure,dial Indicating, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
Key specifications for 6685-01-520-3520: Scale Name: INCHES OF WATER AND POUNDS PRESSURE; Actuation Type: BOURDON TUBE; Mounting Method: THREADED BOSS; Scale Smallest Increment: 5.0 INCHES AND 2.0 POUNDS PER SQUARE INCH (PSI) LBS. 18 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.