PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

85303Head Harness-Breathing Tube Asse

North Safety Products L.l.c. Dba North Safety Products · NSN 4240-01-250-8346 · FSC 4240 · No Item Name Available
Verified by PartsTable
NSN 4240-01-250-8346 — this item is cataloged by the U.S. Government under National Stock Number 4240-01-250-8346. Primary manufacturer part number: 85303.
Features
  • Head Harness-Breathing Tube Asse — FSC 4240
  • Criticality Code Justification: TEXT
  • General Characteristics Item Description: SOLE SOURCE REQUIRED BY STATUTE 6.302
  • 3 verified cross-references
  • Primary manufacturer: North Safety Products L.l.c. Dba North Safety Products
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Head Harness-Breathing Tube Asse, cataloged under National Stock Number 4240-01-250-8346, is classified within Federal Supply Class 4240 (No Item Name Available) of the Fire Fighting, Rescue, and Safety Equipment group. The primary manufacturer of record is North Safety Products L.l.c. Dba North Safety Products. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4240-01-250-8346
Primary Part Number85303
Item NameHead Harness-Breathing Tube Asse
FSC / FSG4240 / 42 — No Item Name Available
ManufacturerNorth Safety Products L.l.c. Dba North Safety Products
StatusACTIVE
Criticality Code JustificationTEXT
General Characteristics Item DescriptionSOLE SOURCE REQUIRED BY STATUTE 6.302
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
6145-00-682-344986048CF48PU INTERCHANGEABLE
Cable,radio Frequency
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (drawings)
4930-00-693-2709BK 8155070 INTERCHANGEABLE
Receptacle,oil Drai
National Automotive Parts Assn/napa/
5330-01-020-2474U2X06-00625NPN INTERCHANGEABLE
Gasket
Technetics Group Llc Dba Technetics Group Columbia Div Technetics Group Columbia
7530-01-723-32952016310-009 INTERCHANGEABLE
Paper,copying,thermographic Proc
Rugged Information Technology Equipment Corporation Dba Rugged Information Technology Equipment
Cross-Reference Index
Part NumberManufacturer
85303 PRIMARY North Safety Products L.l.c. Dba North Safety Products (USA)
86048 Siebe North Inc North Safety Equipment Div (USA)
85303 Siebe North Inc North Safety Equipment Div (USA)
Related Parts
6145-00-682-3449INTERCHANGEABLE
CABLE,RADIO FREQUENCY
86048CF48PU
4930-00-693-2709INTERCHANGEABLE
RECEPTACLE,OIL DRAI
BK 8155070
5330-01-020-2474INTERCHANGEABLE
GASKET
U2X06-00625NPN
7530-01-723-3295INTERCHANGEABLE
PAPER,COPYING,THERMOGRAPHIC PROC
2016310-009

Frequently Asked Questions

What is NSN 4240-01-250-8346?

NSN 4240-01-250-8346 is a Head Harness-Breathing Tube Asse, manufactured by North Safety Products L.l.c. Dba North Safety Products, classified under FSC 4240 (No Item Name Available). Status: active.

What are the part numbers for NSN 4240-01-250-8346?

NSN 4240-01-250-8346 has 3 cross-referenced part numbers: 85303 (North Safety Products L.l.c. Dba North Safety Products), 86048 (Siebe North Inc North Safety Equipment Div), 85303 (Siebe North Inc North Safety Equipment Div).

What NSN replaces 4240-01-250-8346?

There are 4 known substitutes for 4240-01-250-8346: 6145-00-682-3449, 4930-00-693-2709, 5330-01-020-2474 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 85303?

Key specifications for 85303: Criticality Code Justification: TEXT; End Item Identification: NORTH SAFETY EQUIPMENT MODEL 85000 SERIES AIRLINE RESPIRATORS; General Characteristics Item Description: SOLE SOURCE REQUIRED BY STATUTE 6.302. 3 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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