The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-01-528-6205, 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 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-528-6205 |
| Primary Part Number | ED243PG4RWBX |
| 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 | DIFFERENTIAL PRESSURE |
| Actuation Type | DOUBLE BOURDON TUBE |
| Scale Inscription/background Color | BLACK NUMBERS, WHITE BACKGROUND |
| Scale Smallest Increment | 2.0 POUNDS PER SQUARE INCH (PSI) LBS |
| Connection Type | EXTERNAL |
| Scale Range | +0.0 TO 160.0 POUNDS PER SQUARE INCH AND +0.0 TO 240.0 INCHES OF WATER LBS |
| Material Document and Classification | QQ-N-286 FED SPEC SINGLE MATERIAL RESPONSE ACTUATING ELEMENT |
| Scale Type | DIAL |
| Dial Size | 4 1/2IN IN |
| Graduation Unit | 20.0 POUNDS PER SQUARE INCH LBS |
| Connection Location | BACK |
| Material | NICKEL ALLOY K-500 OR NICKEL ALLOY 502 ACTUATING ELEMENT |
| Connection Quantity | 2 |
| Connection Size | 1/4-18NPT-2A 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 |
|---|---|
| ED243PG4RWBX PRIMARY | Ashcroft Inc Dba Heise (USA) |
| Reference | Meaning |
|---|---|
| G27-387 | D/9 Drawing number reference only Ashcroft Inc Dba Heise |
| G27-387 P/N ED243PG4RWBX | 5/1 Secondary reference Ashcroft Inc Dba Heise |
NSN 6685-01-528-6205 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 6685-01-528-6205 has 1 manufacturer part number on file: ED243PG4RWBX (Ashcroft Inc Dba Heise).
3 possible matches (shared part number, not a government interchangeability claim): 6680-01-654-1515, 6685-01-670-7323, 6685-01-689-1262. Verify interchangeability with system specifications before substitution.
Key specifications for ED243PG4RWBX: Scale Name: DIFFERENTIAL PRESSURE; Actuation Type: DOUBLE BOURDON TUBE; Scale Inscription/background Color: BLACK NUMBERS, WHITE BACKGROUND; Scale Smallest Increment: 2.0 POUNDS PER SQUARE INCH (PSI) LBS. 14 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.