The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-01-368-6677, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 28 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-368-6677 |
| Item Name | Gage,pressure,dial Indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Status | ACTIVE |
| Scale Accuracy | 2.5 PCT |
| Scale Name | POUNDS PRESSURE AND OXYGEN |
| Overall Diameter | 1.620 INCHES NOMINAL IN |
| Actuation Type | BOURDON TUBE |
| Mounting Connection Location | BACK, CENTER |
| Mounting Method | RIGID STEM |
| Scale Inscription/background Color | BLACK CHARACTERS ON WHITE BACKGROUND |
| Scale Smallest Increment | 10.0 POUNDS PER SQUARE INCH (PSI) LBS |
| Criticality Code Justification | FEAT |
| Connection Type | EXTERNAL |
| Scale Range | +0.0 TO 200.0 POUNDS PER SQUARE INCH LBS |
| Material Document and Classification | MIL-T-7840 MIL SPEC SINGLE MATERIAL RESPONSE ACTUATING ELEMENT |
| Material Document and Classification | AMS-QQ-A-225/5 FED SPEC SINGLE MATERIAL RESPONSE CASE |
| Pointer Type | INDICATING |
| Adjustability | NONADJUSTABLE |
| Scale Type | DIAL |
| Connector Type Vent | NOT PROVIDED |
| Dial Size | 1 5/8 IN DIA IN |
| Graduation Unit | 100.0 POUNDS PER SQUARE INCH LBS |
| Connection Location | BACK, CENTER |
| Pointer Color | BLACK |
| Surface Treatment | BLACK OXIDE CASE |
| Unable to Decode | UNABLE TO DECODE |
| Material | PLASTIC ACRYLIC PROTECTIVE CRYSTAL |
| Material | NICKEL ALLOY 600 ACTUATING ELEMENT |
| Material | ALUMINUM ALLOY 2017 CASE |
| Connection Quantity | 1 |
| Connection Size | 0.125 IN NPT IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| 9025000 | 3/9 Design control — primary reference American Safety Flight Systems Inc |
NSN 6685-01-368-6677 is a Gage,pressure,dial Indicating, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6685-01-606-7400. Verify interchangeability with system specifications before substitution.
Key specifications for 6685-01-368-6677: Scale Accuracy: 2.5 PCT; Scale Name: POUNDS PRESSURE AND OXYGEN; Overall Diameter: 1.620 INCHES NOMINAL IN; Actuation Type: BOURDON TUBE. 28 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.