PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

510-53Seat,valve

Tescom Corp Dba Tescom Div Tescom · NSN 4820-01-108-9559 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-108-9559 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-108-9559. Primary manufacturer part number: 510-53.
Features
  • Seat,valve — FSC 4820
  • 2 verified cross-references
  • Primary manufacturer: Tescom Corp Dba Tescom Div Tescom
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-108-9559, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Tescom Corp Dba Tescom Div Tescom. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameSeat,valve
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersTescom Corp Dba Tescom Div Tescom (CAGE 13669); Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok (CAGE 28968)
Technical Specifications
ParameterValue
NSN4820-01-108-9559
Primary Part Number510-53
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTescom Corp Dba Tescom Div Tescom
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5133-00-233-6463 INTERCHANGEABLE
Drill,twist
5950-01-051-826151053 INTERCHANGEABLE
Reactor
Standex Electronics, Inc.
4530-01-140-4912MS49007-22S30A8L INTERCHANGEABLE
Nozzle,oil Burner,pressure Atomi
Sae International Dba Sae International
2610-01-481-537878390 INTERCHANGEABLE
Tire,pneumatic,vehicular
Michelin North America, Inc Dba Michelin North America, Inc
1680-01-545-924251053 INTERCHANGEABLE
Piston,aircraft,mat
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
Cross-Reference Index
Part NumberManufacturer
510-53 PRIMARY Tescom Corp Dba Tescom Div Tescom (USA)
510-53 Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok (USA)
Related Parts
5133-00-233-6463INTERCHANGEABLE
DRILL,TWIST
5950-01-051-8261INTERCHANGEABLE
REACTOR
51053
4530-01-140-4912INTERCHANGEABLE
NOZZLE,OIL BURNER,PRESSURE ATOMI
MS49007-22S30A8L
2610-01-481-5378INTERCHANGEABLE
TIRE,PNEUMATIC,VEHICULAR
78390
1680-01-545-9242INTERCHANGEABLE
PISTON,AIRCRAFT,MAT
51053

Frequently Asked Questions

What is NSN 4820-01-108-9559?

NSN 4820-01-108-9559 is a Seat,valve, manufactured by Tescom Corp Dba Tescom Div Tescom, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-108-9559?

NSN 4820-01-108-9559 has 2 cross-referenced part numbers: 510-53 (Tescom Corp Dba Tescom Div Tescom), 510-53 (Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok).

What NSN replaces 4820-01-108-9559?

There are 5 known substitutes for 4820-01-108-9559: 5133-00-233-6463, 5950-01-051-8261, 4530-01-140-4912 and 2 more. Verify interchangeability with system specifications before substitution.

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