PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

42555Piston,valve

Woodward Hrt Inc · NSN 4810-00-055-2921 · FSC 4810 · No Item Name Available
Verified by PartsTable
NSN 4810-00-055-2921 — this item is cataloged by the U.S. Government under National Stock Number 4810-00-055-2921. Primary manufacturer part number: 42555.
Features
  • Piston,valve — FSC 4810
  • 1 verified cross-reference
  • Primary manufacturer: Woodward Hrt Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Piston,valve, cataloged under National Stock Number 4810-00-055-2921, is classified within Federal Supply Class 4810 (No Item Name Available) of the Valves group. The primary manufacturer of record is Woodward Hrt Inc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NamePiston,valve
FSC / FSG4810 — No Item Name Available (FSG 48)
ManufacturersWoodward Hrt Inc (CAGE 81873)
Technical Specifications
ParameterValue
NSN4810-00-055-2921
Primary Part Number42555
Item NamePiston,valve
FSC / FSG4810 / 48 — No Item Name Available
ManufacturerWoodward Hrt Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5330-00-109-70621-748-4 INTERCHANGEABLE
Seal,plain Encased
Rexnord Industries, Llc Div Aerospace Solutions Downers Grove
2910-00-162-3424 INTERCHANGEABLE
Tank,fuel,engine
5945-00-259-60662409-1194988REVCPCP2788-7 INTERCHANGEABLE
Relay,thermal
Naval Ship Systems Command
4920-00-838-6301 INTERCHANGEABLE
Matrix Module Assy
2990-01-050-8973349482 INTERCHANGEABLE
Pipe,exhaust
General Motors Llc Dba General Motors Llc
3020-01-314-8890369756PC3 INTERCHANGEABLE
Gear,bevel
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
6515-01-548-102742555 INTERCHANGEABLE
Nipple and Nut Assembly,medical
Teleflex Llc
Cross-Reference Index
Part NumberManufacturer
42555 PRIMARY Woodward Hrt Inc (USA)
Related Parts
5330-00-109-7062INTERCHANGEABLE
SEAL,PLAIN ENCASED
1-748-4
2910-00-162-3424INTERCHANGEABLE
TANK,FUEL,ENGINE
5945-00-259-6066INTERCHANGEABLE
RELAY,THERMAL
2409-1194988REVCPCP2788-7
4920-00-838-6301INTERCHANGEABLE
MATRIX MODULE ASSY
2990-01-050-8973INTERCHANGEABLE
PIPE,EXHAUST
349482
3020-01-314-8890INTERCHANGEABLE
GEAR,BEVEL
369756PC3
6515-01-548-1027INTERCHANGEABLE
NIPPLE AND NUT ASSEMBLY,MEDICAL
42555

Frequently Asked Questions

What is NSN 4810-00-055-2921?

NSN 4810-00-055-2921 is a Piston,valve, manufactured by Woodward Hrt Inc, classified under FSC 4810 (No Item Name Available). Status: active.

What are the part numbers for NSN 4810-00-055-2921?

NSN 4810-00-055-2921 has 1 cross-referenced part number: 42555 (Woodward Hrt Inc).

What NSN replaces 4810-00-055-2921?

There are 7 known substitutes for 4810-00-055-2921: 5330-00-109-7062, 2910-00-162-3424, 5945-00-259-6066 and 4 more. Verify interchangeability with system specifications before substitution.

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