The Cartridge,respirator,air Filteri, cataloged under National Stock Number 4240-01-245-3328, 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 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4240-01-245-3328 |
| Primary Part Number | R91A |
| Item Name | Cartridge,respirator,air Filteri |
| FSC / FSG | 4240 / 42 — No Item Name Available |
| Manufacturer | Square D Co Monroe Plant |
| Status | ACTIVE |
| Criticality Code Justification | FEAT |
| Hazard Protection Feature | ORGANIC VAPORS |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4240-01-245-3328 is a Cartridge,respirator,air Filteri, manufactured by Square D Co Monroe Plant, classified under FSC 4240 (No Item Name Available). Status: active.
NSN 4240-01-245-3328 has 4 cross-referenced part numbers: 51136 (Square D Co Monroe Plant), 51136 (American Optical Co), R91A (Square D Co Monroe Plant), R91A (American Optical Co).
There are 5 known substitutes for 4240-01-245-3328: 5133-00-233-6398, 5360-00-598-4988, 2940-01-130-5028 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for R91A: Criticality Code Justification: FEAT; Hazard Protection Feature: ORGANIC VAPORS; Special Features: USED ON AMERICAN OPTICAL MODELS R/S4000,R/S5000,R/S6000 AND R/S7000 RESPIRATORS; NIOSH APPROVAL NO. TC-23C-490/491; SOLE SOURCE REQUIRED BY STATUTE 6.302. 3 total characteristics are documented in the Federal Logistics Information System.