PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

54A50B308Cover Assy,valve

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 1040-00-936-9289 · FSC 1040 · No Item Name Available
Verified by PartsTable
NSN 1040-00-936-9289 — this item is cataloged by the U.S. Government under National Stock Number 1040-00-936-9289. Primary manufacturer part number: 54A50B308.
Features
  • Cover Assy,valve — FSC 1040
  • 4 verified cross-references
  • Primary manufacturer: Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Cover Assy,valve, cataloged under National Stock Number 1040-00-936-9289, is classified within Federal Supply Class 1040 (No Item Name Available) of the Weapons group. The primary manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameCover Assy,valve
FSC / FSG1040 — No Item Name Available (FSG 10)
ManufacturersL3harris Technologies, Inc. Div Space and Airborne Systems (CAGE 82340); Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (CAGE 10001); Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (CAGE 30003); L3harris Technologies, Inc. (CAGE 9Y580)
Technical Specifications
ParameterValue
NSN1040-00-936-9289
Primary Part Number54A50B308
Item NameCover Assy,valve
FSC / FSG1040 / 10 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5330-00-338-280427421 INTERCHANGEABLE
Gasket
Briggs and Stratton Corp
4320-00-876-048153159 INTERCHANGEABLE
Parts Kit,spool
Haskel International, Llc Dba Haskel International, Llc
5935-00-886-359231-2742-1 INTERCHANGEABLE
Connector,plug,electrical
Amphenol Corporation Div Amphenol Rf
Cross-Reference Index
Part NumberManufacturer
27421 L3harris Technologies, Inc. Div Space and Airborne Systems (USA)
54A50B308 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
54A50B308 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
27421 L3harris Technologies, Inc. (USA)
Related Parts
5330-00-338-2804INTERCHANGEABLE
GASKET
27421
4320-00-876-0481INTERCHANGEABLE
PARTS KIT,SPOOL
53159
5935-00-886-3592INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
31-2742-1

Frequently Asked Questions

What is NSN 1040-00-936-9289?

NSN 1040-00-936-9289 is a Cover Assy,valve, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 1040 (No Item Name Available). Status: active.

What are the part numbers for NSN 1040-00-936-9289?

NSN 1040-00-936-9289 has 4 cross-referenced part numbers: 27421 (L3harris Technologies, Inc. Div Space and Airborne Systems), 54A50B308 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 54A50B308 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 27421 (L3harris Technologies, Inc.).

What NSN replaces 1040-00-936-9289?

There are 3 known substitutes for 1040-00-936-9289: 5330-00-338-2804, 4320-00-876-0481, 5935-00-886-3592. Verify interchangeability with system specifications before substitution.

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