The Cover,exhalation Valve, cataloged under National Stock Number 4240-01-250-8990, 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 2 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 | 4240-01-250-8990 |
| Primary Part Number | R46 |
| Item Name | Cover,exhalation Valve |
| FSC / FSG | 4240 / 42 — No Item Name Available |
| Manufacturer | Square D Co Monroe Plant |
| Status | ACTIVE |
| Criticality Code Justification | TEXT |
| General Characteristics Item Description | SOLE SOURCE REQUIRED BY STATUTE 6.302 |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4240-01-250-8990 is a Cover,exhalation Valve, manufactured by Square D Co Monroe Plant, classified under FSC 4240 (No Item Name Available). Status: active.
NSN 4240-01-250-8990 has 2 cross-referenced part numbers: R46 (Square D Co Monroe Plant), R46 (Aearo Company).
There are 5 known substitutes for 4240-01-250-8990: 2920-00-064-7811, 2815-00-355-1652, 5325-00-598-1474 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for R46: End Item Identification: AMERICAN OPTICAL SERIES R4000,R5000,R6000 AND R8000 RESPIRAOTR; Criticality Code Justification: TEXT; General Characteristics Item Description: SOLE SOURCE REQUIRED BY STATUTE 6.302. 3 total characteristics are documented in the Federal Logistics Information System.