The Gage,differential,dial Indicatin, cataloged under National Stock Number 6685-01-734-6005, 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 18 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 | 6685-01-734-6005 |
| Primary Part Number | 40-1131SD-25L-XFF-PD-15# |
| Item Name | Gage,differential,dial Indicatin |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Ashcroft Inc Dba Heise |
| Status | ACTIVE |
| Mounting Hole Quantity | 3 |
| Scale Marking | RANGE SCALE |
| Scale Accuracy | PLUS OR MINUS 2 PERCENT |
| Scale Name | DIFFERENTIAL PRESSURE |
| Overall Diameter | 4.10 INCHES NOMINAL IN |
| Actuation Type | DIAPHRAGM |
| Mounting Method | FLANGE AND HOLE |
| Connection Type | EXTERNAL |
| Mounting Hole Diameter | 0.165 INCHES NOMINAL IN |
| Scale Name for Which Pointer Is Designed | DIFFERENTIAL PRESSURE |
| Pointer Type | INDICATING |
| Scale Type | SINGLE AND PLASTIC |
| Bolt Circle Diameter | 4.76 INCHES NOMINAL IN |
| Connection Location | BACK, LOWER |
| Material | STEEL CORROSION RESISTING OVERALL |
| Connection Quantity | 1 |
| Bezel Type | FLUSH FLANGE |
| Connection Size | .25 NPT FEMALE CONNECTION |
| 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 |
|---|---|
| 40-1131SD-25L-XFF-PD-15# PRIMARY | Ashcroft Inc Dba Heise (USA) |
NSN 6685-01-734-6005 is a Gage,differential,dial Indicatin, manufactured by Ashcroft Inc Dba Heise, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-734-6005 has 1 manufacturer part number on file: 40-1131SD-25L-XFF-PD-15# (Ashcroft Inc Dba Heise).
Key specifications for 40-1131SD-25L-XFF-PD-15#: Mounting Hole Quantity: 3; Scale Marking: RANGE SCALE; Scale Accuracy: PLUS OR MINUS 2 PERCENT; Scale Name: DIFFERENTIAL PRESSURE. 18 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.