The Cartridge,respirator,air Filteri, cataloged under National Stock Number 4240-01-247-7231, 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4240-01-247-7231 |
| Primary Part Number | 51042 |
| Item Name | Cartridge,respirator,air Filteri |
| FSC / FSG | 4240 / 42 — No Item Name Available |
| Manufacturer | Square D Co Monroe Plant |
| Status | ACTIVE |
| Hazard Protection Feature | DUST AND MIST AND CHLORINE,HYDROGEN CHLORIDE,ORGANIC VAPORS,SULFUR DIOXIDE,FUMES,ASBESTOS-CONTAINING DUSTS AND MISTS,RADON DAUGHTERS,RADIONUCLIDES AND PESTICIDES |
| FSC Application Data | RESPIRATOR,AIR FILTERING |
| Criticality Code Justification | FEAT |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4240-01-247-7231 is a Cartridge,respirator,air Filteri, manufactured by Square D Co Monroe Plant, classified under FSC 4240 (No Item Name Available). Status: active.
NSN 4240-01-247-7231 has 4 cross-referenced part numbers: R53HE (American Optical Co), 51042 (Square D Co Monroe Plant), 51042 (American Optical Co), R53HE (Aearo Company).
There are 7 known substitutes for 4240-01-247-7231: 5330-00-015-0527, 5999-00-104-4457, 5133-00-266-9467 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for 51042: Hazard Protection Feature: DUST AND MIST AND CHLORINE,HYDROGEN CHLORIDE,ORGANIC VAPORS,SULFUR DIOXIDE,FUMES,ASBESTOS-CONTAINING DUSTS AND MISTS,RADON DAUGHTERS,RADIONUCLIDES AND PESTICIDES; 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; Criticality Code Justification: FEAT. 4 total characteristics are documented in the Federal Logistics Information System.