The Respirator,air Filtering, cataloged under National Stock Number 4240-01-251-1570, 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 3m Company. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4240-01-251-1570 |
| Primary Part Number | R6500 |
| Item Name | Respirator,air Filtering |
| FSC / FSG | 4240 / 42 — No Item Name Available |
| Manufacturer | 3m Company |
| Status | CANCELLED |
| Material Type | ELASTIC |
| Filter Type | CARTRIDGE AND FILTER PAD |
| Mask Filter Quantity | 2 |
| Filter Replaceability | REPLACEABLE |
| Material | RUBBER MASK |
| Head Harness | INCLUDED |
| Mask Type | HALF FACEPIECE |
| Criticality Code Justification | FEAT |
| Adjustability | ADJUSTABLE |
| Exhaust Valve | INCLUDED |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| R6500 | 3m Company (USA) |
| R6500 | Aearo Company (USA) |
| R6000 | American Optical Co (USA) |
| R6000 | Aearo Company (USA) |
| 50615 | Aearo Company (USA) |
| 50615 | American Optical Co (USA) |
| R6500 | American Optical Co (USA) |
| 50625 | American Optical Co (USA) |
| 50625 | Aearo Company (USA) |
| R6500 | Aearo Company 1 Dba Aearo Div Ao Safety Occupational Prescription Eyewear (USA) |
NSN 4240-01-251-1570 is a Respirator,air Filtering, manufactured by 3m Company, classified under FSC 4240 (No Item Name Available). Status: cancelled.
NSN 4240-01-251-1570 has 10 cross-referenced part numbers: R6500 (3m Company), R6500 (Aearo Company), R6000 (American Optical Co), R6000 (Aearo Company), 50615 (Aearo Company) and 5 more.
There are 12 known substitutes for 4240-01-251-1570: 5977-00-038-3127, 5340-00-130-0261, 3110-00-158-8350 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for R6500: Material Type: ELASTIC; Filter Type: CARTRIDGE AND FILTER PAD; Mask Filter Quantity: 2; Filter Replaceability: REPLACEABLE. 11 total characteristics are documented in the Federal Logistics Information System.
NSN 4240-01-251-1570 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.