PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SA23XSurface Heater,pump

Watlow Electric Manufacturing Co Dba Watlow · NSN 4320-01-165-3580 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-165-3580 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-165-3580. Primary manufacturer part number: SA23X.
Features
  • Surface Heater,pump — FSC 4320
  • General Characteristics Item Description: 6-32 THREAD ON HEATER; USED ON 4320-00-798-9968 PUMP UNIT,CENTRIFUGAL
  • 3 verified cross-references
  • Primary manufacturer: Watlow Electric Manufacturing Co Dba Watlow
Applications
  • Fluid transfer and circulation
  • Cooling system maintenance
  • Industrial process pumping
General Description

The Surface Heater,pump, cataloged under National Stock Number 4320-01-165-3580, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Watlow Electric Manufacturing Co Dba Watlow. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-01-165-3580
Primary Part NumberSA23X
Item NameSurface Heater,pump
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerWatlow Electric Manufacturing Co Dba Watlow
StatusACTIVE
General Characteristics Item Description6-32 THREAD ON HEATER; USED ON 4320-00-798-9968 PUMP UNIT,CENTRIFUGAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5310-00-019-0670MS35333-106 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
6685-00-110-487560079G001 INTERCHANGEABLE
Choke Assembly
Hersey Measurement Co Div of Miller Industries Inc
5310-00-171-849616203 INTERCHANGEABLE
Washer,flat
Honeywell International, Inc Div Aerospace-Tucson
5310-00-393-4629 INTERCHANGEABLE
Washer,worm
5935-00-481-0734G350187S1 INTERCHANGEABLE
Adapter,connector
L3harris Technologies, Inc Div Space & Airborne Systems
5940-00-983-6114 INTERCHANGEABLE
Terminal Board
6250-01-282-19131620300 INTERCHANGEABLE
Holder,lampholder
Phoenix Products Llc Dba Phoenix Lighting Products Llc
6515-01-589-482102.205.055 INTERCHANGEABLE
Screw,bone
Depuy Synthes Sales Inc Dba Depuy Synthes Trauma Div Depuy Synthes Sales, Inc., D/b/a Depuy Synthes Trauma
Cross-Reference Index
Part NumberManufacturer
16203 Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc. (USA)
16203 Howden Fluid Systems (USA)
SA23X PRIMARY Watlow Electric Manufacturing Co Dba Watlow (USA)
Related Parts
5310-00-019-0670INTERCHANGEABLE
WASHER,LOCK
MS35333-106
6685-00-110-4875INTERCHANGEABLE
CHOKE ASSEMBLY
60079G001
5310-00-171-8496INTERCHANGEABLE
WASHER,FLAT
16203
5310-00-393-4629INTERCHANGEABLE
WASHER,WORM
5935-00-481-0734INTERCHANGEABLE
ADAPTER,CONNECTOR
G350187S1
5940-00-983-6114INTERCHANGEABLE
TERMINAL BOARD
6250-01-282-1913INTERCHANGEABLE
HOLDER,LAMPHOLDER
1620300
6515-01-589-4821INTERCHANGEABLE
SCREW,BONE
02.205.055

Frequently Asked Questions

What is NSN 4320-01-165-3580?

NSN 4320-01-165-3580 is a Surface Heater,pump, manufactured by Watlow Electric Manufacturing Co Dba Watlow, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-01-165-3580?

NSN 4320-01-165-3580 has 3 cross-referenced part numbers: 16203 (Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc.), 16203 (Howden Fluid Systems), SA23X (Watlow Electric Manufacturing Co Dba Watlow).

What NSN replaces 4320-01-165-3580?

There are 8 known substitutes for 4320-01-165-3580: 5310-00-019-0670, 6685-00-110-4875, 5310-00-171-8496 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SA23X?

Key specifications for SA23X: General Characteristics Item Description: 6-32 THREAD ON HEATER; USED ON 4320-00-798-9968 PUMP UNIT,CENTRIFUGAL; End Item Identification: AN/FPS-6 RADAR SET. 2 total characteristics are documented in the Federal Logistics Information System.

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