# NSN 4240-01-022-1541: Mask, Air Line

NSN 4240-01-022-1541 (also written 4240010221541; NIIN 01-022-1541) is a mask, air line in Federal Supply Class 4240, Safety and Rescue Equipment. 3 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Oct 2026.

## Identification

- NSN: 4240-01-022-1541 (4240010221541)
- NIIN: 01-022-1541 (010221541)
- Item name: MASK,AIR LINE
- Federal Supply Class: [FSC 4240 Safety and Rescue Equipment](https://nsnexplorer.com/fsc/4240/)
- Federal Supply Group: [FSG 42](https://nsnexplorer.com/group/42/)
- Acquisition method suffix code: AMSC Z: a commercial, nondevelopmental or off-the-shelf item. (observed 2026-11-01)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| ABFF | FURNISHED ITEMS | HARNESS |
| APGF | DESIGN TYPE | MOUTH AND NOSE |
| BSRX | OXYGEN SYSTEM TYPE | DEMAND FLOW |
| BSRZ | INTAKE TUBE LENGTH | INCHES NOMINAL 25.000 |
| FEAT | SPECIAL FEATURES | CLEAR SINGLE LENS FACEPIECE W/OVERHEAD HARNESS,28.000 IN. FLEXIBLE BREATHING TUBE,DEMAND FLOW,QUICK DISCONNECT,BELT MOUNTED REGULATOR W/TWO CONNECTIONS |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 01-95021 | 55799 | MINE SAFETY APPLIANCES COMPANY | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 95021 | 55799 | MINE SAFETY APPLIANCES COMPANY | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| C-95021 | D9182 | ZF INDUSTRIEANTRIEBE WITTEN GMBH | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-10-28 | [SPE8E626D0003/SPE8E627F0143](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4240010221541) | MASK, AIR LINE | ATLANTIC DIVING SUPPLY, INC. DBA ADS | $172,125.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4240010221541&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4240010221541
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- USAspending contract actions (each award above links to its record)
- All data is public U.S. government data; every row above links to its source record where one exists.

Canonical page: https://nsnexplorer.com/nsn/4240-01-022-1541/
JSON: https://nsnexplorer.com/api/nsn/4240-01-022-1541.json