The Filter,gas-Particulate, cataloged under National Stock Number 4240-01-509-6842, is classified within Federal Supply Class 4240 (Safety and Rescue Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. The manufacturer of record is Thermo Electron Corp. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4240-01-509-6842 |
| Primary Part Number | TR101ZU |
| Item Name | Filter,gas-Particulate |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Manufacturer | Thermo Electron Corp |
| Status | ACTIVE |
| Material | CHARCOAL FILTER |
| 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 |
|---|---|
| TR101ZU PRIMARY | Thermo Electron Corp (USA) |
| Reference | Meaning |
|---|---|
| 03-1169 | 5/1 Secondary reference U.S. Government activity |
| 6515NCM030945 | 5/1 Secondary reference Defense Medical Standardization Board |
NSN 4240-01-509-6842 is a Filter,gas-Particulate, manufactured by Thermo Electron Corp, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
NSN 4240-01-509-6842 has 1 manufacturer part number on file: TR101ZU (Thermo Electron Corp).
1 possible match (shared part number, not a government interchangeability claim): 4240-01-571-6848. Verify interchangeability with system specifications before substitution.
Key specifications for TR101ZU: Special Features: FILTER,CARBON ZERO; USED TO ZERO IN THE INSTRUMENT; Part Name Assigned by Controlling Agency: CARBON ZERO FILTER FOR MIRAN SAPPHIRE AIR DETECTOR EA; End Item Identification: MIRAN SAPPHIRE AIR DETECTOR (FOXBORO); Material: CHARCOAL FILTER. 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.