PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

539112Seat,valve

Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp · NSN 4820-00-505-6915 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-505-6915 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-505-6915. Primary manufacturer part number: 539112.
Features
  • Seat,valve — FSC 4820
  • 2 verified cross-references
  • Primary manufacturer: Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Seat,valve, cataloged under National Stock Number 4820-00-505-6915, 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 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameSeat,valve
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersWestinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp (CAGE 82722); Bosch Rexroth Corporation Div Bosch Rexroth (CAGE 65035)
Technical Specifications
ParameterValue
NSN4820-00-505-6915
Primary Part Number539112
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerWestinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5940-01-210-317353911-2 INTERCHANGEABLE
Terminal,lug
Te Connectivity Corporation
Cross-Reference Index
Part NumberManufacturer
539112 Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp (USA)
P-58903-002 Bosch Rexroth Corporation Div Bosch Rexroth (USA)
Related Parts
5940-01-210-3173INTERCHANGEABLE
TERMINAL,LUG
53911-2

Frequently Asked Questions

What is NSN 4820-00-505-6915?

NSN 4820-00-505-6915 is a Seat,valve, manufactured by Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-505-6915?

NSN 4820-00-505-6915 has 2 cross-referenced part numbers: 539112 (Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp), P-58903-002 (Bosch Rexroth Corporation Div Bosch Rexroth).

What NSN replaces 4820-00-505-6915?

There is 1 known substitute for 4820-00-505-6915: 5940-01-210-3173. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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