The Valve Assembly, cataloged under National Stock Number 4820-01-554-4121, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-554-4121 |
| Primary Part Number | 850721 |
| Item Name | Valve Assembly |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 850721 PRIMARY | Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp (USA) |
NSN 4820-01-554-4121 is a Valve Assembly, manufactured by Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-554-4121 has 1 cross-referenced part number: 850721 (Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp).
There is 1 known substitute for 4820-01-554-4121: 6750-01-390-4113. Verify interchangeability with system specifications before substitution.
Key specifications for 850721: End Item Identification: RAIL CAR ASSEMBLY. 1 total characteristics are documented in the Federal Logistics Information System.