The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-01-138-4170, 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 Meggitt Safety Systems Inc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-138-4170 |
| Primary Part Number | 18305301 |
| Item Name | Gage,pressure,dial Indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Meggitt Safety Systems Inc |
| Status | ACTIVE |
| Scale Accuracy | PORM 2 PCT FULL RANGE |
| Scale Name | PRESSURE |
| Overall Diameter | 2.000 INCHES NOMINAL IN |
| Actuation Type | BOURDON TUBE |
| Scale Inscription/background Color | BLACK MARKINGS ON WHITE BACKGROUND |
| Connection Type | EXTERNAL |
| Scale Range | +0.0 TO 500.0 POUNDS PRESSURE PER SQUARE INCH LBS |
| Material Document and Classification | MIL-T-7840 MIL SPEC SINGLE MATERIAL RESPONSE ACTUATING ELEMENT |
| Pointer Type | INDICATING |
| Adjustability | ADJUSTABLE |
| Scale Type | SINGLE |
| Connector Type Vent | NOT PROVIDED |
| Connection Location | BACK, CENTER |
| Pointer Color | BLACK |
| Material | STEEL CORROSION RESISTING CASE |
| Material | NICKEL ALLOY 600 ACTUATING ELEMENT |
| Material | PLASTIC PROTECTIVE CRYSTAL |
| Connection Quantity | 1 |
| 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 |
|---|---|
| 18305301 PRIMARY | Meggitt Safety Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 675VP06 | 5/2 Secondary reference U.S. Government activity |
| 18305301 | 5/9 Secondary reference Meggitt Safety Systems, Inc. Dba Meggitt Control Systems-Ventura County |
NSN 6685-01-138-4170 is a Gage,pressure,dial Indicating, manufactured by Meggitt Safety Systems Inc, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-138-4170 has 1 manufacturer part number on file: 18305301 (Meggitt Safety Systems Inc).
Key specifications for 18305301: Scale Accuracy: PORM 2 PCT FULL RANGE; Scale Name: PRESSURE; Overall Diameter: 2.000 INCHES NOMINAL IN; Actuation Type: BOURDON TUBE. 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.