NSN 4240-01-644-3729 · NIIN 016443729 · Part number 20K0203
Opec Systems Pty Ltd Div Defense Division · FSC 4240 — Safety and Rescue Equipment · FSG 42 — Fire Fighting, Rescue, and Safety Equipment · CAGE Z1Z76
Government record, cited
NSN 4240-01-644-3729 — this item is cataloged by the U.S. Government under National Stock Number 4240-01-644-3729. Manufacturer of record part number: 20K0203.
Also searched as4240-01-644-3729 ·
4240016443729 ·
NIIN 016443729 ·
01-644-3729 ·
FSC 4240 Safety and Rescue Equipment · CAGE Z1Z76 · 20K0203
Manufacturer of record: Opec Systems Pty Ltd Div Defense Division
Identification
NSN: 4240-01-644-3729
NIIN: 016443729
FSC: 4240 — Safety and Rescue Equipment
FSG: 42 — Fire Fighting, Rescue, and Safety Equipment
Primary part number: 20K0203
Manufacturer: Opec Systems Pty Ltd Div Defense Division
General Description
The Filter,air,chemical-Biological, cataloged under National Stock Number 4240-01-644-3729, 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 Opec Systems Pty Ltd Div Defense Division. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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
4240-01-644-3729
Primary Part Number
20K0203
Item Name
Filter,air,chemical-Biological
FSC / FSG
4240 / 42 — Safety and Rescue Equipment
Manufacturer
Opec Systems Pty Ltd Div Defense Division
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
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 4240-01-644-3729?
NSN 4240-01-644-3729 is a Filter,air,chemical-Biological, manufactured by Opec Systems Pty Ltd Div Defense Division, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
What part numbers are listed for NSN 4240-01-644-3729?
NSN 4240-01-644-3729 has 1 manufacturer part number on file: 20K0203 (Opec Systems Pty Ltd Div Defense Division).
What are the specifications of 20K0203?
Key specifications for 20K0203: Special Features: 2XHE/P100, 2XHE/OV/AG; Part Name Assigned by Controlling Agency: FILTER CANISTER KIT; End Item Identification: 20K0203. 0 specifications are documented in the U.S. Government catalog.
Is NSN 4240-01-644-3729 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.