The Filter,respirator,air Filtering, cataloged under National Stock Number 4240-01-247-7239, 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 2 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4240-01-247-7239 |
| Primary Part Number | R50AW |
| Item Name | Filter,respirator,air Filtering |
| FSC / FSG | 4240 / 42 — No Item Name Available |
| Manufacturer | Square D Co Monroe Plant |
| Status | ACTIVE |
| Criticality Code Justification | FEAT |
| Hazard Protection Feature | DUST AND MIST AND METAL FUMES |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4240-01-247-7239 is a Filter,respirator,air Filtering, manufactured by Square D Co Monroe Plant, classified under FSC 4240 (No Item Name Available). Status: active.
NSN 4240-01-247-7239 has 4 cross-referenced part numbers: R50AW (American Optical Co), 51019 (American Optical Co), 51019 (Aearo Company), R50AW (Square D Co Monroe Plant).
There are 6 known substitutes for 4240-01-247-7239: 5133-00-232-8135, 3110-00-554-2917, 5310-00-595-7571 and 3 more. Verify interchangeability with system specifications before substitution.
Key specifications for R50AW: Criticality Code Justification: FEAT; Special Features: SOLE SOURCE REQUIRED BY STATUTE 6.302; TC-21C-297; Hazard Protection Feature: DUST AND MIST AND METAL FUMES. 3 total characteristics are documented in the Federal Logistics Information System.