The Dampener,fluid Pressure, cataloged under National Stock Number 6685-01-519-8395, 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 Mcmaster-Carr Supply Co. Government technical data includes 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 6685-01-519-8395 |
| Primary Part Number | 3820K23 |
| Item Name | Dampener,fluid Pressure |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Tube Connection Type | FLARELESS |
| Thread Location | EXTERNAL AND INTERNAL |
| Threaded Direct Pressure Connection | NOT PROVIDED |
| Gage End Connection Type | FEMALE |
| Material | COPPER ALLOY |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 3820K23 | Mcmaster-Carr Supply Co (USA) |
| Reference | Meaning |
|---|---|
| MRVC-5185 B/M NO. 37 | 3/9 Design control — primary reference Mestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating |
| MRVC-5185 | D/9 Drawing number reference only Mestek, Inc. Dba American Warming & Ventilating Division Div American Warming and Ventilating |
NSN 6685-01-519-8395 is a Dampener,fluid Pressure, manufactured by Mcmaster-Carr Supply Co, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-519-8395 has 1 manufacturer part number on file: 3820K23 (Mcmaster-Carr Supply Co).
Key specifications for 3820K23: Overall Length: 1.250 INCHES NOMINAL IN; Tube Connection Type: FLARELESS; Thread Location: EXTERNAL AND INTERNAL; Threaded Direct Pressure Connection: NOT PROVIDED. 6 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.