The Chamber,air Brake, cataloged under National Stock Number 2530-01-509-7653, is classified within Federal Supply Class 2530 (Vehicular Brake, Steering, Axle, Wheel, and Track Components) of the Vehicular Equipment Components group. The manufacturer of record is Navistar Inc. Dba Navistar Div Federal Government Sales Group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2530-01-509-7653 |
| Primary Part Number | 3541890C91 |
| Item Name | Chamber,air Brake |
| FSC / FSG | 2530 / 25 — Vehicular Brake, Steering, Axle, Wheel, and Track Components |
| Manufacturer | Navistar Inc. Dba Navistar Div Federal Government Sales Group |
| Status | ACTIVE |
| Diaphragm Quantity | 1 |
| Features Provided | RUBBER DIAPHRAGM |
| Function for Which Designed | SERVICE BRAKING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| ZAJ3232951 | Navistar Inc. Dba Navistar Div Federal Government Sales Group (USA) |
| 3541890C91 PRIMARY | Navistar Inc. Dba Navistar Div Federal Government Sales Group (USA) |
NSN 2530-01-509-7653 is a Chamber,air Brake, manufactured by Navistar Inc. Dba Navistar Div Federal Government Sales Group, classified under FSC 2530, Vehicular Brake, Steering, Axle, Wheel, and Track Components. Status: active.
NSN 2530-01-509-7653 has 2 manufacturer part numbers on file: ZAJ3232951 (Navistar Inc. Dba Navistar Div Federal Government Sales Group), 3541890C91 (Navistar Inc. Dba Navistar Div Federal Government Sales Group).
1 possible match (shared part number, not a government interchangeability claim): 2530-01-537-4220. Verify interchangeability with system specifications before substitution.
Key specifications for 3541890C91: Diaphragm Quantity: 1; Features Provided: RUBBER DIAPHRAGM; Function for Which Designed: SERVICE BRAKING; Special Features: THIS BARREL SHAPED AIR CANISTER IS USED IN AIR BRAKE SYSTEMS, AND IS TYPICALLY MOUNTED TO THE BACK OF THE AIR BRAKE CAM BRACKET AT EACH WHEEL.. 3 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.