PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

803-2177142-54X-88Stem,fluid Valve

Naval Ship Systems Command · NSN 4820-01-666-1560 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-666-1560 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-666-1560. Primary manufacturer part number: 803-2177142-54X-88.
Features
  • Stem,fluid Valve — FSC 4820
  • 2 verified cross-references
  • Primary manufacturer: Naval Ship Systems Command
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Stem,fluid Valve, cataloged under National Stock Number 4820-01-666-1560, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Naval Ship Systems Command. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameStem,fluid Valve
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersNaval Ship Systems Command (CAGE 80064)
Technical Specifications
ParameterValue
NSN4820-01-666-1560
Primary Part Number803-2177142-54X-88
Item NameStem,fluid Valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerNaval Ship Systems Command
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
4820-01-067-9924803-2177142-51X-02A INTERCHANGEABLE
Disk,valve
Naval Sea Systems Command
4820-01-091-2955803-2177142-5XX-15 INTERCHANGEABLE
Collar,stem Guide
Naval Ship Systems Command
4820-01-091-8124803-2177142-51X-3A INTERCHANGEABLE
Body Guided Disk Nut,valve
Naval Ship Systems Command
4820-01-091-8125803-2177142-5XX-9A INTERCHANGEABLE
Retainer,bonnet
Naval Ship Systems Command
4820-01-091-8126803-2177142-5XX-12 INTERCHANGEABLE
Gland,valve
Naval Ship Systems Command
4820-01-125-9821803-2177142-5XX-23 INTERCHANGEABLE
Handwheel Locknut,valve
Naval Ship Systems Command
4820-01-215-4342803-2177142-5XX-5A INTERCHANGEABLE
Cap,valve
Naval Ship Systems Command
4820-01-215-4343803-2177142-51X-17 INTERCHANGEABLE
Cap,valve
Naval Ship Systems Command
4820-01-219-5591803-2177142-512 INTERCHANGEABLE
Valve,globe
Naval Ship Systems Command
4820-01-274-3609803-2177142-514 INTERCHANGEABLE
Valve,globe
Naval Ship Systems Command
Cross-Reference Index
Part NumberManufacturer
803-2177142-54X-88 PRIMARY Naval Ship Systems Command (USA)
803-2177142 Naval Ship Systems Command (USA)
Related Parts
4820-01-067-9924INTERCHANGEABLE
DISK,VALVE
803-2177142-51X-02A
4820-01-091-2955INTERCHANGEABLE
COLLAR,STEM GUIDE
803-2177142-5XX-15
4820-01-091-8124INTERCHANGEABLE
BODY GUIDED DISK NUT,VALVE
803-2177142-51X-3A
4820-01-091-8125INTERCHANGEABLE
RETAINER,BONNET
803-2177142-5XX-9A
4820-01-091-8126INTERCHANGEABLE
GLAND,VALVE
803-2177142-5XX-12
4820-01-125-9821INTERCHANGEABLE
HANDWHEEL LOCKNUT,VALVE
803-2177142-5XX-23
4820-01-215-4342INTERCHANGEABLE
CAP,VALVE
803-2177142-5XX-5A
4820-01-215-4343INTERCHANGEABLE
CAP,VALVE
803-2177142-51X-17
4820-01-219-5591INTERCHANGEABLE
VALVE,GLOBE
803-2177142-512
4820-01-274-3609INTERCHANGEABLE
VALVE,GLOBE
803-2177142-514
4820-01-690-7660INTERCHANGEABLE
STEM,FLUID VALVE

Frequently Asked Questions

What is NSN 4820-01-666-1560?

NSN 4820-01-666-1560 is a Stem,fluid Valve, manufactured by Naval Ship Systems Command, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-666-1560?

NSN 4820-01-666-1560 has 2 cross-referenced part numbers: 803-2177142-54X-88 (Naval Ship Systems Command), 803-2177142 (Naval Ship Systems Command).

What NSN replaces 4820-01-666-1560?

There are 11 known substitutes for 4820-01-666-1560: 4820-01-067-9924, 4820-01-091-2955, 4820-01-091-8124 and 8 more. Verify interchangeability with system specifications before substitution.

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