PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

R54HECartridge,respirator,air Filteri

Square D Co Monroe Plant · NSN 4240-01-247-7232 · FSC 4240 · No Item Name Available
Verified by PartsTable
NSN 4240-01-247-7232 — this item is cataloged by the U.S. Government under National Stock Number 4240-01-247-7232. Primary manufacturer part number: R54HE.
Features
  • Cartridge,respirator,air Filteri — FSC 4240
  • Hazard Protection Feature: DUST AND MIST AND AMMONIA,METHYLAMINE,FUMES,ASBESTOS-CONTAINING DUSTS AND MISTS,RADON DAUGHTERS AND RADIONUCLIDES
  • Criticality Code Justification: FEAT
  • FSC Application Data: RESPIRATOR,AIR FILTERING
  • 4 verified cross-references
  • Primary manufacturer: Square D Co Monroe Plant
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Cartridge,respirator,air Filteri, cataloged under National Stock Number 4240-01-247-7232, 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 Square D Co Monroe Plant. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4240-01-247-7232
Primary Part NumberR54HE
Item NameCartridge,respirator,air Filteri
FSC / FSG4240 / 42 — No Item Name Available
ManufacturerSquare D Co Monroe Plant
StatusACTIVE
Hazard Protection FeatureDUST AND MIST AND AMMONIA,METHYLAMINE,FUMES,ASBESTOS-CONTAINING DUSTS AND MISTS,RADON DAUGHTERS AND RADIONUCLIDES
Criticality Code JustificationFEAT
FSC Application DataRESPIRATOR,AIR FILTERING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5935-00-080-0629300T1000A INTERCHANGEABLE
Connector,plug,electrical
Lax Electronics, Inc. Dba Automatic Connector Div Automatic Connector
3110-00-100-6153147487 INTERCHANGEABLE
Ball,bearing
Auto Gear and Parts Inc
5133-00-232-2868 INTERCHANGEABLE
Drill,twist
5340-00-286-4157 INTERCHANGEABLE
Button,plug
2940-00-541-5918C145E INTERCHANGEABLE
Filter Element,fluid
Honeywell International Inc Dba Honeywell Div Consumer Products Group
5950-00-683-8108 INTERCHANGEABLE
Transformer,audio Frequency
5340-00-684-9492 INTERCHANGEABLE
Button,plug
2805-00-847-9775133670R1 INTERCHANGEABLE
Guide,valve Stem
Navistar Intl Corp Truck Br Ohio Plant
4730-01-071-6033510-43 INTERCHANGEABLE
Strainer Element,sediment
Tescom Corp Dba Tescom Div Tescom
7510-01-186-3987101410 INTERCHANGEABLE
Ribbon,inking
Federal Marketing Co Div of Virginia Impression Products Inc
Cross-Reference Index
Part NumberManufacturer
R54HE American Optical Co (USA)
51043 Aearo Company (USA)
51043 American Optical Co (USA)
R54HE PRIMARY Square D Co Monroe Plant (USA)
Related Parts
5935-00-080-0629INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
300T1000A
3110-00-100-6153INTERCHANGEABLE
BALL,BEARING
147487
5133-00-232-2868INTERCHANGEABLE
DRILL,TWIST
5340-00-286-4157INTERCHANGEABLE
BUTTON,PLUG
2940-00-541-5918INTERCHANGEABLE
FILTER ELEMENT,FLUID
C145E
5950-00-683-8108INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5340-00-684-9492INTERCHANGEABLE
BUTTON,PLUG
2805-00-847-9775INTERCHANGEABLE
GUIDE,VALVE STEM
133670R1
4730-01-071-6033INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
510-43
7510-01-186-3987INTERCHANGEABLE
RIBBON,INKING
101410
1095-01-238-8776INTERCHANGEABLE
COVER,PROTECTIVE,MINE DISPENSER
5-10-43
5305-01-698-1117INTERCHANGEABLE
SCREW,MACHINE
51043

Frequently Asked Questions

What is NSN 4240-01-247-7232?

NSN 4240-01-247-7232 is a Cartridge,respirator,air Filteri, manufactured by Square D Co Monroe Plant, classified under FSC 4240 (No Item Name Available). Status: active.

What are the part numbers for NSN 4240-01-247-7232?

NSN 4240-01-247-7232 has 4 cross-referenced part numbers: R54HE (American Optical Co), 51043 (Aearo Company), 51043 (American Optical Co), R54HE (Square D Co Monroe Plant).

What NSN replaces 4240-01-247-7232?

There are 12 known substitutes for 4240-01-247-7232: 5935-00-080-0629, 3110-00-100-6153, 5133-00-232-2868 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of R54HE?

Key specifications for R54HE: Hazard Protection Feature: DUST AND MIST AND AMMONIA,METHYLAMINE,FUMES,ASBESTOS-CONTAINING DUSTS AND MISTS,RADON DAUGHTERS AND RADIONUCLIDES; Criticality Code Justification: FEAT; FSC Application Data: RESPIRATOR,AIR FILTERING; Special Features: SOLE SOURCE REQUIRED BY STATUTE 6.302; USED ON AMERICAN OPTICAL AO 5 STAR,AO 7 STAR,QUANTFIT AND COMMANDER RESPIRATORS. 4 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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