The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-01-522-5609, 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 Ashcroft Inc Dba Heise. Government technical data includes 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-522-5609 |
| Primary Part Number | EA243LOPRWB0 |
| Item Name | Gage,pressure,dial Indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Ashcroft Inc Dba Heise |
| Status | ACTIVE |
| Scale Name | ALTITUDE AND PRESSURE |
| Actuation Type | BOURDON TUBE |
| Scale Smallest Increment | 50.0 POUNDS PER SQUARE INCH (PSI) LBS |
| Connection Type | EXTERNAL |
| Scale Range | +0.0 TO 5000.0 POUNDS PER SQUARE INCH AND +0.0 TO 35000.0 POUNDS PRESSURE PER SQUARE INCH LBS |
| Pointer Type | INDICATING |
| Adjustability | NONADJUSTABLE |
| Scale Type | DIAL |
| Connector Type Vent | NOT PROVIDED |
| Dial Size | 4-1/2IN IN |
| Graduation Unit | 500.0 POUNDS PER SQUARE INCH LBS |
| Connection Location | BACK |
| Pointer Color | ANY ACCEPTABLE |
| Material | STEEL CORROSION RESISTING ACTUATING ELEMENT |
| Connection Quantity | 1 |
| Connection Size | 7/16-20 UNF-2A(O-RING) A |
| 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 |
|---|---|
| EA243LOPRWB0 PRIMARY | Ashcroft Inc Dba Heise (USA) |
| Reference | Meaning |
|---|---|
| SG4MC3KPWRANAG | 5/9 Secondary reference U.S. Government activity |
| MIL-G-18997E | 5/9 Secondary reference U.S. Government activity |
NSN 6685-01-522-5609 is a Gage,pressure,dial Indicating, manufactured by Ashcroft Inc Dba Heise, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-522-5609 has 1 manufacturer part number on file: EA243LOPRWB0 (Ashcroft Inc Dba Heise).
Key specifications for EA243LOPRWB0: Scale Name: ALTITUDE AND PRESSURE; Actuation Type: BOURDON TUBE; Scale Smallest Increment: 50.0 POUNDS PER SQUARE INCH (PSI) LBS; Connection Type: EXTERNAL. 16 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.