The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-01-561-8640, 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 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-561-8640 |
| Primary Part Number | 25-1009AW-02B-XUCWN-160PSI |
| 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 |
| Mounting Hole Quantity | 1 |
| Scale Accuracy | 1.0 PERCENT FULL SCALE |
| Scale Name | PRESSURE |
| Actuation Type | BOURDON TUBE |
| Mounting Connection Location | BACK, CENTER |
| Mounting Method | CLAMP |
| Scale Inscription/background Color | BLACK LETTERING ON WHITE DIAL BACKGROUND |
| Scale Smallest Increment | 1.0 POUNDS PER SQUARE INCH (PSI) LBS |
| Connection Type | EXTERNAL |
| Scale Range | +0.0 TO 160.0 POUNDS PRESSURE PER SQUARE INCH LBS |
| Material Document and Classification | AISI 316 ASSN STD SINGLE MATERIAL RESPONSE ACTUATING ELEMENT |
| Mounting Hole Diameter | 2.813 INCHES NOMINAL IN |
| Pointer Type | INDICATING |
| Adjustability | ADJUSTABLE |
| Scale Type | METER DIAL |
| Connector Type Vent | NOT PROVIDED |
| Dial Size | 2-1/2 INCH IN |
| Graduation Unit | 10.0 POUNDS PER SQUARE INCH LBS |
| Connection Location | BACK, CENTER |
| Pointer Color | BLACK |
| Material | STEEL CORROSION RESISTING CASE |
| Material | STEEL COMP 316 ACTUATING ELEMENT |
| Connection Quantity | 1 |
| Connection Size | 1/4 INCH NPT 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 |
|---|---|
| 25-1009AW-02B-XUCWN-160PSI PRIMARY | Ashcroft Inc Dba Heise (USA) |
| Reference | Meaning |
|---|---|
| 103106 | 7/2 Vendor item drawing reference Dh Instruments Inc. |
| 25-1009AW02B-XUC-WN160PSI | 5/9 Secondary reference Aztech Controls Corporation Dba a T C |
NSN 6685-01-561-8640 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 6685-01-561-8640 has 1 manufacturer part number on file: 25-1009AW-02B-XUCWN-160PSI (Ashcroft Inc Dba Heise).
1 possible match (shared part number, not a government interchangeability claim): 1550-01-717-0240. Verify interchangeability with system specifications before substitution.
Key specifications for 25-1009AW-02B-XUCWN-160PSI: Mounting Hole Quantity: 1; Scale Accuracy: 1.0 PERCENT FULL SCALE; Scale Name: PRESSURE; Actuation Type: 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.