NSN 4120-01-644-0175 · NIIN 016440175 · Part number 2004541-X1
Hdt Expeditionary Systems, Inc. Dba Hdt Tactical Systems Inc · FSC 4120 — Air Conditioning Equipment · FSG 41 — Refrigeration, AC, and Air Circulating Equipment · CAGE 7JYX1
Government record, cited
NSN 4120-01-644-0175 — this item is cataloged by the U.S. Government under National Stock Number 4120-01-644-0175. Manufacturer of record part number: 2004541-X1.
Also searched as4120-01-644-0175 ·
4120016440175 ·
NIIN 016440175 ·
01-644-0175 ·
FSC 4120 Air Conditioning Equipment · CAGE 7JYX1 · 2004541-X1
Nearby stock numbers← 4120-01-643-8968 Hvac Unit, Marine
·
4120-01-644-0427 Air Conditioner →
Features
Environmental Control System — FSC 4120
1 manufacturer part number on file
Manufacturer of record: Hdt Expeditionary Systems, Inc. Dba Hdt Tactical Systems Inc
Identification
NSN: 4120-01-644-0175
NIIN: 016440175
FSC: 4120 — Air Conditioning Equipment
FSG: 41 — Refrigeration, AC, and Air Circulating Equipment
Primary part number: 2004541-X1
Manufacturer: Hdt Expeditionary Systems, Inc. Dba Hdt Tactical Systems Inc
General Description
The Environmental Control System, cataloged under National Stock Number 4120-01-644-0175, is classified within Federal Supply Class 4120 (Air Conditioning Equipment) of the Refrigeration, AC, and Air Circulating 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4120-01-644-0175
Primary Part Number
2004541-X1
Item Name
Environmental Control System
FSC / FSG
4120 / 41 — Air Conditioning Equipment
Manufacturer
Hdt Expeditionary Systems, Inc. Dba Hdt Tactical Systems Inc
Hdt Expeditionary Systems, Inc. Dba Hdt Tactical Systems Inc (USA)
Reference documents
Reference
Meaning
2004541-X1
3/9Design control — primary reference
Hdt Expeditionary Systems, Inc.
No interchangeability data on file.
Other items in FSC 4120 — Air Conditioning Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4120-00-000-0076
4120-00-000-0076 · Item name not on file
4120-00-001-8402
4120-00-001-8402 · Item name not on file
4120-00-001-8403
4120-00-001-8403 · Item name not on file
4120-00-006-6074
4120-00-006-6074 · Item name not on file
4120-00-010-1372
4120-00-010-1372 · Item name not on file
4120-00-011-3383
4120-00-011-3383 · Item name not on file
4120-00-011-3387
4120-00-011-3387 · Item name not on file
4120-00-011-3388
4120-00-011-3388 · Item name not on file
Frequently Asked Questions
What is NSN 4120-01-644-0175?
NSN 4120-01-644-0175 is a Environmental Control System, manufactured by Hdt Expeditionary Systems, Inc. Dba Hdt Tactical Systems Inc, classified under FSC 4120, Air Conditioning Equipment. Status: active.
What part numbers are listed for NSN 4120-01-644-0175?
NSN 4120-01-644-0175 has 1 manufacturer part number on file: 2004541-X1 (Hdt Expeditionary Systems, Inc. Dba Hdt Tactical Systems Inc).
What are the specifications of 2004541-X1?
Key specifications for 2004541-X1: Part Name Assigned by Controlling Agency: 5-TON BASIC ECU, SKID MOUNT. 0 specifications are documented in the U.S. Government catalog.
Is NSN 4120-01-644-0175 hazardous material?
No hazard code in the DLA record (HMIC N). 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.