The Respirator,air Filtering, cataloged under National Stock Number 4240-01-251-1568, 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 American Optical Co. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 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 | 4240-01-251-1568 |
| Primary Part Number | 50089 |
| Item Name | Respirator,air Filtering |
| FSC / FSG | 4240 / 42 — No Item Name Available |
| Manufacturer | American Optical Co |
| Status | ACTIVE |
| Adjustability | ADJUSTABLE |
| Filter Type | CARTRIDGE AND FILTER PAD |
| Mask Filter Quantity | 2 |
| Filter Replaceability | REPLACEABLE |
| Exhaust Valve | INCLUDED |
| Material Type | ELASTIC |
| Material | RUBBER MASK |
| Mask Type | HALF FACEPIECE |
| Criticality Code Justification | FEAT |
| Head Harness | INCLUDED |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 50089 | American Optical Co (USA) |
| R5500 | Aearo Company (USA) |
| 50089.00000 | 3m Company (USA) |
| 50089.00000 | Aearo Company 1 Dba Aearo Div Ao Safety Occupational Prescription Eyewear (USA) |
| 50089 | Aearo Company (USA) |
| R5500 | American Optical Co (USA) |
NSN 4240-01-251-1568 is a Respirator,air Filtering, manufactured by American Optical Co, classified under FSC 4240 (No Item Name Available). Status: active.
NSN 4240-01-251-1568 has 6 cross-referenced part numbers: 50089 (American Optical Co), R5500 (Aearo Company), 50089.00000 (3m Company), 50089.00000 (Aearo Company 1 Dba Aearo Div Ao Safety Occupational Prescription Eyewear), 50089 (Aearo Company) and 1 more.
There are 6 known substitutes for 4240-01-251-1568: 2510-00-100-2699, 9540-00-254-1205, 1005-00-600-4669 and 3 more. Verify interchangeability with system specifications before substitution.
Key specifications for 50089: Adjustability: ADJUSTABLE; Filter Type: CARTRIDGE AND FILTER PAD; Mask Filter Quantity: 2; Filter Replaceability: REPLACEABLE. 11 total characteristics are documented in the Federal Logistics Information System.