The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-01-157-5482, 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 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 6685-01-157-5482 |
| Primary Part Number | UA25-H4L |
| 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 Accuracy | PORM 2 PCT MIDDLE HALF; 3 PCT REMAINDER |
| Scale Name | PRESSURE |
| Overall Diameter | 2.688 INCHES NOMINAL IN |
| Mounting Method | SURFACE |
| Scale Inscription/background Color | BLACK MARKINGS ON WHITE BACKGROUND |
| Scale Smallest Increment | 0.25 INCHES IN |
| Connection Type | EXTERNAL |
| Scale Range | +0.0 TO 30.0 INCHES IN |
| Pointer Type | INDICATING |
| Adjustability | ADJUSTABLE |
| Scale Type | SINGLE |
| Connector Type Vent | NOT PROVIDED |
| Dial Size | 2-1/2 IN. DIA IN |
| Graduation Unit | 5.0 INCHES IN |
| Connection Location | BOTTOM |
| Pointer Color | BLACK |
| Material | STEEL CASE |
| Connection Quantity | 1 |
| 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 |
|---|---|
| UA25-H4L PRIMARY | Ashcroft Inc Dba Heise (USA) |
| Reference | Meaning |
|---|---|
| UA12-H | 5/9 Secondary reference Weksler Glass Thermometer Corp |
NSN 6685-01-157-5482 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 6685-01-157-5482 has 1 manufacturer part number on file: UA25-H4L (Ashcroft Inc Dba Heise).
Key specifications for UA25-H4L: Scale Accuracy: PORM 2 PCT MIDDLE HALF; 3 PCT REMAINDER; Scale Name: PRESSURE; Overall Diameter: 2.688 INCHES NOMINAL IN; Mounting Method: SURFACE. 19 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.