The Dampener,fluid Pressure, cataloged under National Stock Number 6685-01-623-9359, 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 15 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-623-9359 |
| Item Name | Dampener,fluid Pressure |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Status | ACTIVE |
| Removable Piston | NOT PROVIDED |
| Operating Pressure Range | +1001.0 TO 6000.0 POUNDS PER SQUARE INCH LBS |
| Nominal Pipe Size Designation | 0.250 INCHES IN |
| Relationship to Similar Equipment | 6685-01-622-6576 MADE TO HIGHER HX SPECIFICATIONS |
| Tube Connection Type | FLARELESS |
| Thread Location | EXTERNAL AND INTERNAL |
| Threaded Direct Pressure Connection | NOT PROVIDED |
| Specification/standard Data | 81349MIL-DTL-2940 GOVERNMENT SPECIFICATION |
| Fluid Type for Which Designed | GAS |
| Gage End Connection Type | FEMALE AND MALE |
| Thread Size | 7/16-20 |
| Screw Thread Series Designator | UNF |
| Thread Class | 2A AND 3B A |
| Material | STEEL CORROSION RESISTING |
| Connection Quantity | 2 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| M2940-3-H-C-F-Z | 5/1 Secondary reference Operating & Maintenance Specialties Inc |
| MIL-DTL-2940 | 4/1 Identification reference U.S. Government activity |
| M2940-3-H-C-F-Z | 2/2 Government specification standardization U.S. Government activity |
| 504-8200941 ITEM 19 | 5/1 Secondary reference Naval Sea Systems Command |
NSN 6685-01-623-9359 is a Dampener,fluid Pressure, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
Key specifications for 6685-01-623-9359: Removable Piston: NOT PROVIDED; Operating Pressure Range: +1001.0 TO 6000.0 POUNDS PER SQUARE INCH LBS; Nominal Pipe Size Designation: 0.250 INCHES IN; Relationship to Similar Equipment: 6685-01-622-6576 MADE TO HIGHER HX SPECIFICATIONS. 15 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.