The Indicator,differential Pressure, cataloged under National Stock Number 6685-01-167-7364, 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 Pall Aeropower Corporation. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-167-7364 |
| Primary Part Number | 25223 |
| Item Name | Indicator,differential Pressure |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Pall Aeropower Corporation |
| Status | ACTIVE |
| General Characteristics Item Description | AMBIENT TEMP RANGE M83 DEG F,P194 DEG F; OPERATING PRESSURE 250 PSID; 1.970 IN. O/A LG; 1.960 IN. O/A W IN |
| 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 |
|---|---|
| 7583889 | Pti Technologies Inc. (USA) |
| 25223 PRIMARY | Pall Aeropower Corporation (USA) |
| Reference | Meaning |
|---|---|
| 25223 | 5/9 Secondary reference Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div |
| 42312D166 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 6685-01-167-7364 is a Indicator,differential Pressure, manufactured by Pall Aeropower Corporation, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-167-7364 has 2 manufacturer part numbers on file: 7583889 (Pti Technologies Inc.), 25223 (Pall Aeropower Corporation).
2 possible matches (shared part number, not a government interchangeability claim): 5945-01-430-9286, 6625-01-563-7813. Verify interchangeability with system specifications before substitution.
Key specifications for 25223: General Characteristics Item Description: AMBIENT TEMP RANGE M83 DEG F,P194 DEG F; OPERATING PRESSURE 250 PSID; 1.970 IN. O/A LG; 1.960 IN. O/A W IN; End Item Identification: AIRCRAFT MODEL F-18. 1 specification is 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.