The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-01-185-1637, 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 22 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 6685-01-185-1637 |
| Primary Part Number | 20-W100502T300PSIG |
| 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 | 3-2-3 PERCENT |
| Scale Name | POUNDS PRESSURE |
| Actuation Type | BOURDON TUBE |
| Mounting Connection Location | TOP CENTER |
| Mounting Method | RIGID STEM |
| Scale Inscription/background Color | BLACK ON WHITE FACE |
| Scale Smallest Increment | 5.0 POUNDS PER SQUARE INCH (PSI) LBS |
| Connection Type | EXTERNAL |
| Scale Range | +0.0 TO 300.0 POUNDS PER SQUARE INCH LBS |
| Scale Name for Which Pointer Is Designed | PRESSURE |
| Pointer Type | INDICATING |
| Adjustability | NONADJUSTABLE |
| Scale Type | DIAL |
| Connector Type Vent | NOT PROVIDED |
| Dial Size | 2 1/2 INCH DIAMETER IN |
| Connection Location | TOP CENTER |
| Pointer Color | BLACK |
| Material | BRASS ACTUATING ELEMENT |
| Material | PLASTIC ACRYLONITRILE-BUTADIENE-STYRENE (ABS) CASE |
| Connection Quantity | 1 |
| Bezel Type | BAYONET |
| 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 |
|---|---|
| 20-W100502T300PSIG PRIMARY | Ashcroft Inc Dba Heise (USA) |
| Reference | Meaning |
|---|---|
| 342C340H19 | 7/9 Vendor item drawing reference U.S. Government activity |
| 342C340H19 | 7/2 Vendor item drawing reference Northrop Grumman Support Services Corp |
NSN 6685-01-185-1637 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 6685-01-185-1637 has 1 manufacturer part number on file: 20-W100502T300PSIG (Ashcroft Inc Dba Heise).
Key specifications for 20-W100502T300PSIG: Scale Accuracy: 3-2-3 PERCENT; Scale Name: POUNDS PRESSURE; Actuation Type: BOURDON TUBE; Mounting Connection Location: TOP CENTER. 22 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.