PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20645-00/POPPETStem,fluid Valve

Real-Time Laboratories, Llc · NSN 4810-01-229-5521 · FSC 4810 · No Item Name Available
Verified by PartsTable
NSN 4810-01-229-5521 — this item is cataloged by the U.S. Government under National Stock Number 4810-01-229-5521. Primary manufacturer part number: 20645-00/POPPET.
Features
  • Stem,fluid Valve — FSC 4810
  • 2 verified cross-references
  • Primary manufacturer: Real-Time Laboratories, Llc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Stem,fluid Valve, cataloged under National Stock Number 4810-01-229-5521, is classified within Federal Supply Class 4810 (No Item Name Available) of the Valves group. The primary manufacturer of record is Real-Time Laboratories, Llc. 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 / FSG4810 — No Item Name Available (FSG 48)
ManufacturersReal-Time Laboratories, Llc (CAGE 62319)
Technical Specifications
ParameterValue
NSN4810-01-229-5521
Primary Part Number20645-00/POPPET
Item NameStem,fluid Valve
FSC / FSG4810 / 48 — No Item Name Available
ManufacturerReal-Time Laboratories, Llc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5133-00-262-2178 INTERCHANGEABLE
Drill,twist
6620-00-346-035620645 INTERCHANGEABLE
Shaft,oil Pinion
Meggitt (new Hampshire), Inc
5330-00-384-878220645 INTERCHANGEABLE
Gasket
Eaton Aerospace, Llc Dba Jackson South
5305-00-434-4379 INTERCHANGEABLE
Screw,nylon
4310-00-468-0302 INTERCHANGEABLE
Cover
5950-00-518-3640TR1228 INTERCHANGEABLE
Transformer,power
Bae Systems Information and Electronic Systems Integration Inc.
1680-00-673-3199W20645 INTERCHANGEABLE
Screw,windshield Wi
Emerson Electric Co Alco Controls Div
1560-01-147-722410-30191-24 INTERCHANGEABLE
Latch Assembly,aircraft
The Boeing Company Div Defense
3130-01-194-0859 INTERCHANGEABLE
Cap,pillow Block
5975-01-298-3732206-45 INTERCHANGEABLE
Conduit Assembly,flexible
Dcx-Chol Enterprises, Inc.
Cross-Reference Index
Part NumberManufacturer
20645-00/POPPET PRIMARY Real-Time Laboratories, Llc (USA)
20645 Real-Time Laboratories, Llc (USA)
Related Parts
5133-00-262-2178INTERCHANGEABLE
DRILL,TWIST
6620-00-346-0356INTERCHANGEABLE
SHAFT,OIL PINION
20645
5330-00-384-8782INTERCHANGEABLE
GASKET
20645
5305-00-434-4379INTERCHANGEABLE
SCREW,NYLON
4310-00-468-0302INTERCHANGEABLE
COVER
5950-00-518-3640INTERCHANGEABLE
TRANSFORMER,POWER
TR1228
1680-00-673-3199INTERCHANGEABLE
SCREW,WINDSHIELD WI
W20645
1560-01-147-7224INTERCHANGEABLE
LATCH ASSEMBLY,AIRCRAFT
10-30191-24
3130-01-194-0859INTERCHANGEABLE
CAP,PILLOW BLOCK
5975-01-298-3732INTERCHANGEABLE
CONDUIT ASSEMBLY,FLEXIBLE
206-45
6515-01-360-5831INTERCHANGEABLE
SCREW,BONE
206.45

Frequently Asked Questions

What is NSN 4810-01-229-5521?

NSN 4810-01-229-5521 is a Stem,fluid Valve, manufactured by Real-Time Laboratories, Llc, classified under FSC 4810 (No Item Name Available). Status: active.

What are the part numbers for NSN 4810-01-229-5521?

NSN 4810-01-229-5521 has 2 cross-referenced part numbers: 20645-00/POPPET (Real-Time Laboratories, Llc), 20645 (Real-Time Laboratories, Llc).

What NSN replaces 4810-01-229-5521?

There are 11 known substitutes for 4810-01-229-5521: 5133-00-262-2178, 6620-00-346-0356, 5330-00-384-8782 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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