The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-00-159-2293, 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 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 30 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-00-159-2293 |
| Primary Part Number | 68A4-C81-1 |
| Item Name | Gage,pressure,dial Indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Mounting Hole Quantity | 3 |
| FSC Application Data | GAGE,PRESSURE,DIAL INDICATING,EXCEPT ENGINE |
| Scale Accuracy | 1/2 PCT FULL SCALE |
| Scale Name | PRESSURE |
| Overall Diameter | 6.093 INCHES NOMINAL IN |
| Actuation Type | SINGLE BOURDON TUBE |
| Mounting Method | FLUSH PANEL |
| Scale Inscription/background Color | BLACK FIGURES ON WHITE BACKGROUND |
| Scale Smallest Increment | 50.0 POUNDS LBS |
| Connection Type | INTERNAL |
| Scale Range | +0.000 TO 6000.000 POUNDS PRESSURE PER SQUARE INCH LBS |
| Mounting Hole Diameter | 0.218 INCHES NOMINAL IN |
| Pointer Type | INDICATING |
| Departure From Cited Designator | AS MODIFIED BY SCALE RANGE,GRADUATION UNIT SCALE SMALLEST INCREMENT,AND SCALE MARKING |
| Adjustability | NONADJUSTABLE |
| Scale Type | SINGLE |
| Connector Type Vent | NOT PROVIDED |
| Nondefinitive Spec/std Data | 1 CLASS AND A STYLE AND 1 TYPE |
| Dial Size | 4-1/2 IN. DIA IN |
| Graduation Unit | 500.0 POUNDS LBS |
| Bolt Circle Diameter | 5.625 INCHES NOMINAL IN |
| Connection Location | BACK |
| Pointer Color | BLACK |
| Surface Treatment | ENAMEL CASE |
| Unable to Decode | UNABLE TO DECODE |
| Material | STEEL ALLOY ACTUATING ELEMENT |
| Material | GLASS PROTECTIVE CRYSTAL |
| Material | ALUMINUM AND STEEL CASE |
| Connection Quantity | 1 |
| Bezel Type | HINGE |
| 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 |
|---|---|
| 68A4-C81-1 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 68A4-C81 | 7/2 Vendor item drawing reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| 130265-1913 | 5/9 Secondary reference Ametek, Inc. Div Aerospace & Defense |
| 1435-213 | 5/9 Secondary reference Applied Hydro-Pneumatics Inc |
NSN 6685-00-159-2293 is a Gage,pressure,dial Indicating, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-00-159-2293 has 1 manufacturer part number on file: 68A4-C81-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 68A4-C81-1: Mounting Hole Quantity: 3; FSC Application Data: GAGE,PRESSURE,DIAL INDICATING,EXCEPT ENGINE; Scale Accuracy: 1/2 PCT FULL SCALE; Scale Name: PRESSURE. 30 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.