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NSN 4240-01-226-1666Government record, cited

Entrance, Protective, Pressurized4240-01-226-1666

NSN 4240-01-226-1666 · NIIN 012261666

FSC 4240 — Safety and Rescue Equipment · FSG 42 — Fire Fighting, Rescue, and Safety Equipment

Government record, cited

Also searched as 4240-01-226-1666 · 4240012261666 · NIIN 012261666 · 01-226-1666 · FSC 4240 Safety and Rescue Equipment

Nearby stock numbers ← 4240-01-226-1063 · 4240-01-226-2082 Hose, Extension, Res →

Features

Entrance,protective,pressurized — FSC 4240
General Characteristics Item Description: C/O CAP,AIR DUCT PN5-19-6145; GASKET,PN5-19-6174; PLATE,INSTRUCTION PN5-19-8874; BRACKETS,PNS5-19-6203AND 5-19-6202; PAD,PN5-19-6204; SUPPORT GUIDE,PN5-19-6205; SUPPORT ASSY,PN5-19-8862; SHELL ASSY,PN5-19-8865; DOOR ASSY,PN5-19-8857; WALL ASSY,RIGHT PN 5-19-8875; WALL ASSY,LEFT PN5-19-8876;DEFLECTOR,PN5-19-6226

Identification

NSN: 4240-01-226-1666
NIIN: 012261666
FSC: 4240 — Safety and Rescue Equipment
FSG: 42 — Fire Fighting, Rescue, and Safety Equipment

General Description

The Entrance,protective,pressurized, cataloged under National Stock Number 4240-01-226-1666, is classified within Federal Supply Class 4240 (Safety and Rescue Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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	4240-01-226-1666
Item Name	Entrance,protective,pressurized
FSC / FSG	4240 / 42 — Safety and Rescue Equipment
Status	ACTIVE
General Characteristics Item Description	C/O CAP,AIR DUCT PN5-19-6145; GASKET,PN5-19-6174; PLATE,INSTRUCTION PN5-19-8874; BRACKETS,PNS5-19-6203AND 5-19-6202; PAD,PN5-19-6204; SUPPORT GUIDE,PN5-19-6205; SUPPORT ASSY,PN5-19-8862; SHELL ASSY,PN5-19-8865; DOOR ASSY,PN5-19-8857; WALL ASSY,RIGHT PN 5-19-8875; WALL ASSY,LEFT PN5-19-8876;DEFLECTOR,PN5-19-6226

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL D — Destroy Item
Hazard	Possible hazard — SDS may be required (DLA HMIC P)
Criticality Code	N

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
E5-19-8880	3/2 Design control — primary reference U.S. Government activity

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 4240-01-226-1666?

NSN 4240-01-226-1666 is a Entrance,protective,pressurized, classified under FSC 4240, Safety and Rescue Equipment. Status: active.

What are the specifications of 4240-01-226-1666?

Key specifications for 4240-01-226-1666: General Characteristics Item Description: C/O CAP,AIR DUCT PN5-19-6145; GASKET,PN5-19-6174; PLATE,INSTRUCTION PN5-19-8874; BRACKETS,PNS5-19-6203AND 5-19-6202; PAD,PN5-19-6204; SUPPORT GUIDE,PN5-19-6205; SUPPORT ASSY,PN5-19-8862; SHELL ASSY,PN5-19-8865; DOOR ASSY,PN5-19-8857; WALL ASSY,RIGHT PN 5-19-8875; WALL ASSY,LEFT PN5-19-8876;DEFLECTOR,PN5-19-6226; End Item Identification: 4240-01-M99-0009. 1 specification is documented in the U.S. Government catalog.

Is NSN 4240-01-226-1666 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.

What is the DEMIL code for NSN 4240-01-226-1666?

NSN 4240-01-226-1666 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.

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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