The Probe,filter, cataloged under National Stock Number 6665-01-443-7286, is classified within Federal Supply Class 6665 (Hazard-detecting Instruments and Apparatus) of the Instruments and Laboratory Equipment group. The manufacturer of record is Kuhnke H Inc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6665-01-443-7286 |
| Primary Part Number | 54-05-K0401 |
| Item Name | Probe,filter |
| FSC / FSG | 6665 / 66 — Hazard-detecting Instruments and Apparatus |
| Manufacturer | Kuhnke H Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| 54-05-K0401 PRIMARY | Kuhnke H Inc (USA) |
| 54-05-K0401 | Honeywell Analytics Inc. (USA) |
| Reference | Meaning |
|---|---|
| 54-05-K0401 | 3/9 Design control — primary reference Biosystems Inc Div Sperian Protection Americas Inc. |
| 54-05-K0401 | 5/9 Secondary reference Bw Technologies Ltd |
NSN 6665-01-443-7286 is a Probe,filter, manufactured by Kuhnke H Inc, classified under FSC 6665, Hazard-detecting Instruments and Apparatus. Status: active.
NSN 6665-01-443-7286 has 2 manufacturer part numbers on file: 54-05-K0401 (Kuhnke H Inc), 54-05-K0401 (Honeywell Analytics Inc.).
1 possible match (shared part number, not a government interchangeability claim): 6665-01-444-8321. Verify interchangeability with system specifications before substitution.
Key specifications for 54-05-K0401: Special Features: INCLUDES 2 PARTICULATE FILTERS 61-046 AND 10 HYDROPHOBIC FILTERS 61-047; End Item Identification: PHD ULTRA MULTI GAS DETECTOR. 0 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.