PartsTable TECHNICAL DATA SHEET
NSN 4240-01-689-5423Government record, cited

Filter Unit, Gas-Particulate4240-01-689-5423

NSN 4240-01-689-5423 · NIIN 016895423 · Part number H023532
Hdt Expeditionary Systems, Inc. Dba Hdt Tactical Systems Inc · FSC 4240 — Safety and Rescue Equipment · FSG 42 — Fire Fighting, Rescue, and Safety Equipment · CAGE 7JYX1
Government record, cited
NSN 4240-01-689-5423 — this item is cataloged by the U.S. Government under National Stock Number 4240-01-689-5423. Manufacturer of record part number: H023532.
Also searched as  4240-01-689-5423 · 4240016895423 · NIIN 016895423 · 01-689-5423 · FSC 4240 Safety and Rescue Equipment · CAGE 7JYX1 · H023532
Nearby stock numbers  ·
Features
  • Filter Unit,gas-Particulate — FSC 4240
  • 1 manufacturer part number on file
  • Manufacturer of record: Hdt Expeditionary Systems, Inc. Dba Hdt Tactical Systems Inc
Identification
  • NSN: 4240-01-689-5423
  • NIIN: 016895423
  • FSC: 4240 — Safety and Rescue Equipment
  • FSG: 42 — Fire Fighting, Rescue, and Safety Equipment
  • Primary part number: H023532
  • Manufacturer: Hdt Expeditionary Systems, Inc. Dba Hdt Tactical Systems Inc
General Description

The Filter Unit,gas-Particulate, cataloged under National Stock Number 4240-01-689-5423, 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 Hdt Expeditionary Systems, Inc. Dba Hdt Tactical Systems Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4240-01-689-5423
Primary Part NumberH023532
Item NameFilter Unit,gas-Particulate
FSC / FSG4240 / 42 — Safety and Rescue Equipment
ManufacturerHdt Expeditionary Systems, Inc. Dba Hdt Tactical Systems Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardPossible hazard — SDS may be required (DLA HMIC P)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
H023532 PRIMARY Hdt Expeditionary Systems, Inc. Dba Hdt Tactical Systems Inc (USA)
No interchangeability data on file.
Other items in FSC 4240 — Safety and Rescue Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4240-00-001-1515
4240-00-001-1515 · Item name not on file
4240-00-001-2684
4240-00-001-2684 · Item name not on file
4240-00-006-0022
HOSE,EVACUATION
4240-00-007-4576
4240-00-007-4576 · Item name not on file
4240-00-007-8182
4240-00-007-8182 · Item name not on file
4240-00-007-8183
4240-00-007-8183 · Item name not on file
4240-00-007-8184
4240-00-007-8184 · Item name not on file
4240-00-007-8185
4240-00-007-8185 · Item name not on file

Frequently Asked Questions

What is NSN 4240-01-689-5423?

NSN 4240-01-689-5423 is a Filter Unit,gas-Particulate, manufactured by Hdt Expeditionary Systems, Inc. Dba Hdt Tactical Systems Inc, classified under FSC 4240, Safety and Rescue Equipment. Status: active.

What part numbers are listed for NSN 4240-01-689-5423?

NSN 4240-01-689-5423 has 1 manufacturer part number on file: H023532 (Hdt Expeditionary Systems, Inc. Dba Hdt Tactical Systems Inc).

What are the specifications of H023532?

Key specifications for H023532: Special Features: 50 HERTZ; IEC TYPE 1; Part Name Assigned by Controlling Agency: RECIRCULATION FILTER UNIT. 0 specifications are documented in the U.S. Government catalog.

Is NSN 4240-01-689-5423 hazardous material?

Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

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.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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