The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-00-938-8545, 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 25 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-00-938-8545 |
| Primary Part Number | NA23-PPF4-LBCX |
| 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 | 3 |
| Scale Accuracy | 1.5 PCT ENTIRE RANGE |
| Scale Name | PRESSURE |
| Overall Diameter | 4.812 INCHES NOMINAL IN |
| Actuation Type | SINGLE BOURDON TUBE |
| Mounting Method | SURFACE WALL |
| Scale Inscription/background Color | WHITE FIGURES ON BLACK BACKGROUND |
| Scale Smallest Increment | 1.000 POUNDS PER SQUARE INCH (PSI) LBS |
| Connection Type | EXTERNAL |
| Scale Range | +0.0 TO 100.0 POUNDS PRESSURE PER SQUARE INCH LBS |
| Mounting Hole Diameter | 0.156 INCHES NOMINAL IN |
| Pointer Type | INDICATING |
| Adjustability | NONADJUSTABLE |
| Scale Type | SINGLE |
| Connector Type Vent | NOT PROVIDED |
| Dial Size | 3-1/2 IN. DIA IN |
| Graduation Unit | 5.000 POUNDS PER SQUARE INCH LBS |
| Bolt Circle Diameter | 4.250 INCHES NOMINAL IN |
| Connection Location | BOTTOM |
| Pointer Color | RED |
| Material | PLASTIC CASE |
| Material | BRONZE ACTUATING ELEMENT |
| Material | PLASTIC PROTECTIVE CRYSTAL |
| Connection Quantity | 1 |
| Connection Size | 0.250 IN. 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 |
|---|---|
| NA23-PPF4-LBCX PRIMARY | Ashcroft Inc Dba Heise (USA) |
NSN 6685-00-938-8545 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 6685-00-938-8545 has 1 manufacturer part number on file: NA23-PPF4-LBCX (Ashcroft Inc Dba Heise).
Key specifications for NA23-PPF4-LBCX: Mounting Hole Quantity: 3; Scale Accuracy: 1.5 PCT ENTIRE RANGE; Scale Name: PRESSURE; Overall Diameter: 4.812 INCHES NOMINAL IN. 25 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.