The Dampener,fluid Pressure, cataloged under National Stock Number 6685-01-509-9495, 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 Operating & Maintenance Specialties Inc. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6685-01-509-9495 |
| Primary Part Number | 039M |
| Item Name | Dampener,fluid Pressure |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Operating & Maintenance Specialties Inc |
| Status | ACTIVE |
| Removable Piston | NOT PROVIDED |
| Threaded Direct Pressure Connection | PROVIDED |
| Fluid Type for Which Designed | WATER |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 508-D-9318 ITEM 17 | Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA) |
| 854-07648-000 | Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA) |
| 039M PRIMARY | Operating & Maintenance Specialties Inc (USA) |
| Reference | Meaning |
|---|---|
| 508-D-9318 | D/9 Drawing number reference only Aqua-Chem, Inc. Dba Aqua-Chem Inc |
NSN 6685-01-509-9495 is a Dampener,fluid Pressure, manufactured by Operating & Maintenance Specialties Inc, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-509-9495 has 3 manufacturer part numbers on file: 508-D-9318 ITEM 17 (Aqua-Chem, Inc. Dba Aqua-Chem Inc), 854-07648-000 (Aqua-Chem, Inc. Dba Aqua-Chem Inc), 039M (Operating & Maintenance Specialties Inc).
1 possible match (shared part number, not a government interchangeability claim): 6110-01-510-4170. Verify interchangeability with system specifications before substitution.
Key specifications for 039M: Removable Piston: NOT PROVIDED; Overall Width: 0.250 INCHES NOMINAL IN; Threaded Direct Pressure Connection: PROVIDED; Fluid Type for Which Designed: WATER. 4 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.