# NSN 2530-01-558-4921: Chamber, Air Brake

NSN 2530-01-558-4921 (also written 2530015584921; NIIN 01-558-4921) is a chamber, air brake in Federal Supply Class 2530, Vehicular Brake, Steering, Axle, Wheel, and Track Components. 4 manufacturer part numbers from 4 suppliers are on record. It was last purchased in Oct 2026.

## Identification

- NSN: 2530-01-558-4921 (2530015584921)
- NIIN: 01-558-4921 (015584921)
- Item name: CHAMBER,AIR BRAKE
- Federal Supply Class: [FSC 2530 Vehicular Brake, Steering, Axle, Wheel, and Track Components](https://nsnexplorer.com/fsc/2530/)
- Federal Supply Group: [FSG 25](https://nsnexplorer.com/group/25/)
- Acquisition method suffix code: AMSC D: the data needed to compete the part is unavailable or cannot be obtained economically. (observed 2026-10-23)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AGAV | END ITEM IDENTIFICATION | 2320-01-542-7628;TRUCK, CARGO, 22.5 TON, 10X10, LVSR, MODEL NUMBER MKR18; MRAP - M-ATV |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | BRAKE CHAMBER TYPE 9 WEDGE |
| FEAT | SPECIAL FEATURES | OPERTING PRESSURE: 100 PSI MAX; 0.375 NPTF,DRYSEAL,INLET PORT;LOWEST VENT PLUG REMOVED AFTER CHAMBER INSTALLATION;CHAMBER DIA: 5.218 INCH NOM,NECK DIA:1.620 INCH NOM;NECK LENGTH: 1.560 MIN FULL THREADS;THREADS ARE: 1.750-12 UN-2A |
| PRPY | PROPRIETARY CHARACTERISTICS | NPAC |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 1009103 | 4B100 | INDIAN HEAD INDUSTRIES, INC. DIV MGM BRAKES | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 2530015584921 | A00AM | E.C.A ETABLISSEMENT CENTRAL DES APPROVISIONNEMENTS DES FORCES ARMEES ROYALES | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 3534214 | 45152 | OSHKOSH CORP | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 3534214 | 75Q65 | OSHKOSH DEFENSE LLC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-10-22 | [SPE7L326D60WK/SPE7L027F0517](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=2530015584921) | CHAMBER, AIR BRAKE | VEHICLE MAINTENANCE PROGRAM INC DIV FEDERAL SALES | $1,563.30 |
| 2026-09-10 | [SPE7L326D60WK/SPE7L026F7494](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=2530015584921) | CHAMBER, AIR BRAKE | VEHICLE MAINTENANCE PROGRAM INC DIV FEDERAL SALES | $10,422.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=2530015584921&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=2530015584921
- 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/2530-01-558-4921/
JSON: https://nsnexplorer.com/api/nsn/2530-01-558-4921.json