The Dampener,fluid Pressure, cataloged under National Stock Number 6685-01-460-4880, 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 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-460-4880 |
| Primary Part Number | 560M |
| 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 | PROVIDED |
| Thread Location | EXTERNAL |
| Fluid Type for Which Designed | GAS AND LIQUID |
| Gage End Connection Type | MALE |
| Thread Size | 0.4375-20 |
| Screw Thread Series Designator | UNF |
| Material | NICKEL 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 |
|---|---|
| 560M PRIMARY | Operating & Maintenance Specialties Inc (USA) |
| Reference | Meaning |
|---|---|
| 560-1/4INTY4CLLCOMPB | 3/9 Design control — primary reference Operating & Maintenance Specialties Inc |
NSN 6685-01-460-4880 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 6685-01-460-4880 has 1 manufacturer part number on file: 560M (Operating & Maintenance Specialties Inc).
Key specifications for 560M: Removable Piston: PROVIDED; Overall Length: 2.5500 INCHES NOMINAL IN; Overall Width: 0.688 INCHES NOMINAL IN; Thread Location: EXTERNAL. 8 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.