PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

901-052Test Set,electron Tube

Hickok W O Mfg Co the · NSN 6625-00-643-8554 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-643-8554 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-643-8554. Primary manufacturer part number: 901-052.
Features
  • Test Set,electron Tube — FSC 6625
  • Furnished Items and Quantity: 1 LEAD; GRID AND PLATE FOR LIGHT HOUSE TUBES,1 LEAD; CAPACITY TEST,1 LEAD; PLATE CONNECTOR,2 LEADS; TEST,1 LEAD; GRID CONNECTOR,1 PILOT LAMP,2 FUSE LAMPS,1 NEON LAMP
  • Operation Method: DYNAMIC MUTUAL CONDUCTANCE
  • Filament Voltage Rating in Volts: +1.100 TO 117.000
  • Nondefinitive Spec/std Data: TV3/U TYPE
  • Phase: SINGLE
  • Installation Design: PORTABLE
  • Scale Unit of Measure Inscription: OHMS AND MICROMHOS AND VOLTS, AC AND VOLTS, DC AND MILLIAMPERES, DC AND MICROFARADS
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Test Set,electron Tube, cataloged under National Stock Number 6625-00-643-8554, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Hickok W O Mfg Co the. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6625-00-643-8554
Primary Part Number901-052
Item NameTest Set,electron Tube
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerHickok W O Mfg Co the
StatusCANCELLED
Furnished Items and Quantity1 LEAD; GRID AND PLATE FOR LIGHT HOUSE TUBES,1 LEAD; CAPACITY TEST,1 LEAD; PLATE CONNECTOR,2 LEADS; TEST,1 LEAD; GRID CONNECTOR,1 PILOT LAMP,2 FUSE LAMPS,1 NEON LAMP
Operation MethodDYNAMIC MUTUAL CONDUCTANCE
Filament Voltage Rating in Volts+1.100 TO 117.000
Nondefinitive Spec/std DataTV3/U TYPE
PhaseSINGLE
Installation DesignPORTABLE
Scale Unit of Measure InscriptionOHMS AND MICROMHOS AND VOLTS, AC AND VOLTS, DC AND MILLIAMPERES, DC AND MICROFARADS
Furnished Items and Quantity1 LEAD; GRID AND PLATE FOR LIGHT HOUSE TUBES,1 LEAD; CAPACITY TEST,1 LEAD; PLATE CONNECTOR,2 LEADS; TEST,1 LEAD; GRID CONNECTOR,1 PILOT LAMP,2 FUSE LAMPS,1 NEON LAMP
Operation MethodDYNAMIC MUTUAL CONDUCTANCE
Filament Voltage Rating in Volts+1.100 TO 117.000
Nondefinitive Spec/std DataTV3/U TYPE
PhaseSINGLE
Installation DesignPORTABLE
Scale Unit of Measure InscriptionOHMS AND MICROMHOS AND VOLTS, AC AND VOLTS, DC AND MILLIAMPERES, DC AND MICROFARADS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
3030-00-640-4355 INTERCHANGEABLE
Belts,v,matched Set
Cross-Reference Index
Part NumberManufacturer
901-052 PRIMARY Hickok W O Mfg Co the (USA)
TV3U PRIMARY Joint Electronics Type Designation System (USA)
901-052 PRIMARY Hickok Waekon Llc (USA)
TV3U PRIMARY Hickok W O Mfg Co the (USA)
Related Parts
3030-00-640-4355INTERCHANGEABLE
BELTS,V,MATCHED SET

Frequently Asked Questions

What is NSN 6625-00-643-8554?

NSN 6625-00-643-8554 is a Test Set,electron Tube, manufactured by Hickok W O Mfg Co the, classified under FSC 6625 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6625-00-643-8554?

NSN 6625-00-643-8554 has 4 cross-referenced part numbers: 901-052 (Hickok W O Mfg Co the), TV3U (Joint Electronics Type Designation System), 901-052 (Hickok Waekon Llc), TV3U (Hickok W O Mfg Co the).

What NSN replaces 6625-00-643-8554?

There is 1 known substitute for 6625-00-643-8554: 3030-00-640-4355. Verify interchangeability with system specifications before substitution.

What are the specifications of 901-052?

Key specifications for 901-052: Overall Height: 6.870 INCHES NOMINAL IN; Furnished Items and Quantity: 1 LEAD; GRID AND PLATE FOR LIGHT HOUSE TUBES,1 LEAD; CAPACITY TEST,1 LEAD; PLATE CONNECTOR,2 LEADS; TEST,1 LEAD; GRID CONNECTOR,1 PILOT LAMP,2 FUSE LAMPS,1 NEON LAMP; Operation Method: DYNAMIC MUTUAL CONDUCTANCE; Filament Voltage Rating in Volts: +1.100 TO 117.000. 20 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6625-00-643-8554 still in active supply?

NSN 6625-00-643-8554 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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