PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

243-1Seat,valve

Trac Regulator Co., Inc. Dba Trac Regulator Co Inc · NSN 4820-01-147-1166 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-147-1166 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-147-1166. Primary manufacturer part number: 243-1.
Features
  • Seat,valve — FSC 4820
  • 1 verified cross-reference
  • Primary manufacturer: Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-147-1166, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Trac Regulator Co., Inc. Dba Trac Regulator Co Inc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 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)
ManufacturersTrac Regulator Co., Inc. Dba Trac Regulator Co Inc (CAGE 55378)
Technical Specifications
ParameterValue
NSN4820-01-147-1166
Primary Part Number243-1
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerTrac Regulator Co., Inc. Dba Trac Regulator Co Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5961-00-225-3412G390206S1 INTERCHANGEABLE
Semiconductor Device,diode
L3harris Technologies, Inc Div Space & Airborne Systems
5945-00-274-56771464 INTERCHANGEABLE
Relay,electromagnetic
Borgwarner Pds (anderson), L.l.c.
4320-00-409-87232431 INTERCHANGEABLE
Cam,pump
Itt Jabsco Products
5315-00-663-04222431 INTERCHANGEABLE
Pin,drive,power Actuated
Illinois Tool Works Inc
6615-00-676-55481303441-1 INTERCHANGEABLE
Mount,vertical Gyro
Honeywell Intl Inc Defense Avionics Systems
5365-00-685-03182431 INTERCHANGEABLE
Shim
Del Mar Avionics, Llc
2540-01-119-17435P6874 INTERCHANGEABLE
Mirror Head,vehicular
Caterpillar Inc Div Caterpillar Defense
5935-01-214-066111437084-1 INTERCHANGEABLE
Connector,receptacle,electrical
Us Army Aviation and Missile Command
5360-01-266-334524-31 INTERCHANGEABLE
Spring,helical,compression
Rix Industries
6110-01-294-64152431 INTERCHANGEABLE
Protector,thermal-Overload,elect
Joslyn Clark Controls, Llc
Cross-Reference Index
Part NumberManufacturer
243-1 Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
Related Parts
5961-00-225-3412INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
G390206S1
5945-00-274-5677INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
1464
4320-00-409-8723INTERCHANGEABLE
CAM,PUMP
2431
5315-00-663-0422INTERCHANGEABLE
PIN,DRIVE,POWER ACTUATED
2431
6615-00-676-5548INTERCHANGEABLE
MOUNT,VERTICAL GYRO
1303441-1
5365-00-685-0318INTERCHANGEABLE
SHIM
2431
2540-01-119-1743INTERCHANGEABLE
MIRROR HEAD,VEHICULAR
5P6874
5935-01-214-0661INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
11437084-1
5360-01-266-3345INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
24-31
6110-01-294-6415INTERCHANGEABLE
PROTECTOR,THERMAL-OVERLOAD,ELECT
2431
5945-01-324-9543INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5935-01-361-8847INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
2431

Frequently Asked Questions

What is NSN 4820-01-147-1166?

NSN 4820-01-147-1166 is a Seat,valve, manufactured by Trac Regulator Co., Inc. Dba Trac Regulator Co Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-147-1166?

NSN 4820-01-147-1166 has 1 cross-referenced part number: 243-1 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).

What NSN replaces 4820-01-147-1166?

There are 12 known substitutes for 4820-01-147-1166: 5961-00-225-3412, 5945-00-274-5677, 4320-00-409-8723 and 9 more. Verify interchangeability with system specifications before substitution.

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