Hose, Air Duct, Air Breathing4240-01-494-7750

NSN 4240-01-494-7750 · NIIN 014947750

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

Government record, cited

Also searched as 4240-01-494-7750 · 4240014947750 · NIIN 014947750 · 01-494-7750 · FSC 4240 Safety and Rescue Equipment · 7000131722 · 520-01-77 · 520-01-77

Nearby stock numbers ← 4240-01-494-7749 Canister, Gas Mask · 4240-01-494-9434 Housing Filter Assembly, Gas →

Features

Hose,air Duct,air Breathing — FSC 4240
Measuring Method and Length: 34.000 INCHES NOMINAL OVERALL IN
Connection Type: COUPLING BOTH ENDS
Style Designator: FULLY CONVOLUTED
Coupling Style: EXTERNAL COUPLING SELF-LOCKING FIRST END
Cross-Sectional Shape Style: ROUND

Identification

NSN: 4240-01-494-7750
NIIN: 014947750
FSC: 4240 — Safety and Rescue Equipment
FSG: 42 — Fire Fighting, Rescue, and Safety Equipment

General Description

The Hose,air Duct,air Breathing, cataloged under National Stock Number 4240-01-494-7750, is classified within Federal Supply Class 4240 (Safety and Rescue Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4240-01-494-7750
Item Name	Hose,air Duct,air Breathing
FSC / FSG	4240 / 42 — Safety and Rescue Equipment
Status	ACTIVE
Measuring Method and Length	34.000 INCHES NOMINAL OVERALL IN
Connection Type	COUPLING BOTH ENDS
Style Designator	FULLY CONVOLUTED
Coupling Style	EXTERNAL COUPLING SELF-LOCKING FIRST END
Cross-Sectional Shape Style	ROUND

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	Possible hazard — SDS may be required (DLA HMIC P)
Criticality Code	X

Cross-Reference Index

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

Reference documents

Reference	Meaning
7000131722	5/9 Secondary reference 3m Company
520-01-77	5/9 Secondary reference 3m Company Div Oh&esd
520-01-77	3/9 Design control — primary reference 3m Company

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 4240-01-494-7750?

NSN 4240-01-494-7750 is a Hose,air Duct,air Breathing, classified under FSC 4240, Safety and Rescue Equipment. Status: active.

What are the specifications of 4240-01-494-7750?

Key specifications for 4240-01-494-7750: Measuring Method and Length: 34.000 INCHES NOMINAL OVERALL IN; Connection Type: COUPLING BOTH ENDS; Style Designator: FULLY CONVOLUTED; Coupling Style: EXTERNAL COUPLING SELF-LOCKING FIRST END. 5 specifications are documented in the U.S. Government catalog.

Is NSN 4240-01-494-7750 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.

PartsTable Design LLC · partstable.com