The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-01-455-3655, 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 Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 6685-01-455-3655 |
| Primary Part Number | 7M1187-1 |
| Item Name | Gage,pressure,dial Indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
| Status | ACTIVE |
| Scale Accuracy | (80PSI)FROM 1,500-2,500PSI;(160PSI)FROM 3,000-4,000PSI |
| Scale Name | PRESSURE |
| Actuation Type | BOURDON TUBE |
| Scale Smallest Increment | 200.0 POUNDS PER SQUARE INCH (PSI) LBS |
| Supplementary Features | 1.5IN.DIA;1.25 MAX DEPTH;SQUARE 1.75IN. 4 HOLES0.170 DIA IN |
| Scale Range | +0.0 TO 4000.0 POUNDS PRESSURE PER SQUARE INCH LBS |
| Scale Type | DIAL |
| Connector Type Vent | NOT PROVIDED |
| Graduation Unit | 200.0 BAR |
| Pointer Color | SILVER |
| Material | NICKEL ALLOY ACTUATING ELEMENT |
| Usage Design | PRECHARGE PRESSURES OF HYDROLIC SYSTEM ACCUMULATORS |
| 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 |
|---|---|
| 7M1187-1 PRIMARY | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (USA) |
| Reference | Meaning |
|---|---|
| 7M1187-1 | 5/9 Secondary reference The Boeing Company Div Defense |
NSN 6685-01-455-3655 is a Gage,pressure,dial Indicating, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-455-3655 has 1 manufacturer part number on file: 7M1187-1 (Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems).
Key specifications for 7M1187-1: Scale Accuracy: (80PSI)FROM 1,500-2,500PSI;(160PSI)FROM 3,000-4,000PSI; Scale Name: PRESSURE; Actuation Type: BOURDON TUBE; Scale Smallest Increment: 200.0 POUNDS PER SQUARE INCH (PSI) LBS. 12 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.