PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

T125Tip,electric Soldering Iron

Hexacon Electric Company · NSN 3439-00-277-7556 · FSC 3439 · No Item Name Available
Verified by PartsTable
NSN 3439-00-277-7556 — this item is cataloged by the U.S. Government under National Stock Number 3439-00-277-7556. Primary manufacturer part number: T125.
Features
  • Tip,electric Soldering Iron — FSC 3439
  • Tip Diameter: 0.250 INCHES NOMINAL IN
  • Mounting End Diameter: 0.562 INCHES NOMINAL IN
  • Tiplet Accommodation: NOT INCLUDED
  • Material: COPPER ALLOY
  • Surface Treatment: NICKEL
  • Thread Size: 0.250-18
  • Bend Angle in Deg: 45.0
Applications
  • Applications requiring Copper Alloy construction
General Description

The Tip,electric Soldering Iron, cataloged under National Stock Number 3439-00-277-7556, is classified within Federal Supply Class 3439 (No Item Name Available) of the Metalworking Machinery (continued) group. The primary manufacturer of record is Hexacon Electric Company. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3439-00-277-7556
Primary Part NumberT125
Item NameTip,electric Soldering Iron
FSC / FSG3439 / 34 — No Item Name Available
ManufacturerHexacon Electric Company
StatusACTIVE
Tip Diameter0.250 INCHES NOMINAL IN
Mounting End Diameter0.562 INCHES NOMINAL IN
Tiplet AccommodationNOT INCLUDED
MaterialCOPPER ALLOY
Surface TreatmentNICKEL
Thread Size0.250-18
Bend Angle in Deg45.0
Tip TypeBENT
Tip End StyleNEEDLE
Body StyleROUND OFFSET
Integral Heating ElementNOT INCLUDED
Thread LocationEXTERNAL
Mounting MethodTHREADED END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
3110-00-100-4165 INTERCHANGEABLE
Bearing,roller,tapered
5920-00-228-4493T1-25 INTERCHANGEABLE
Fuse,plug
Cooper Bussmann, Llc Dba Cooper Industries
5975-00-245-1669 INTERCHANGEABLE
Conduit Outlet
5180-00-508-2702T125 INTERCHANGEABLE
Tool Kit,riveter
Hi-Shear Corporation
5136-00-580-715854767 INTERCHANGEABLE
Tap,thread Cutting
Tapco Cutting Tools Inc
2920-00-609-0113XH4759 INTERCHANGEABLE
Lead Assy,electrica
Heale Manufacturing Co Llc
6685-01-360-4548T125 INTERCHANGEABLE
Temperature Indicating Compound
Stevens Instrument Company
5360-01-399-5155T125 INTERCHANGEABLE
Spring,flat
Unertl John Optical Co Inc
6140-01-414-4588T-125 INTERCHANGEABLE
Battery,storage
Battery Service Corporation
4920-01-506-4264 INTERCHANGEABLE
Fixture,aircraft Maintenance
Cross-Reference Index
Part NumberManufacturer
T125 PRIMARY Hexacon Electric Company (USA)
Related Parts
3110-00-100-4165INTERCHANGEABLE
BEARING,ROLLER,TAPERED
5920-00-228-4493INTERCHANGEABLE
FUSE,PLUG
T1-25
5975-00-245-1669INTERCHANGEABLE
CONDUIT OUTLET
5180-00-508-2702INTERCHANGEABLE
TOOL KIT,RIVETER
T125
5136-00-580-7158INTERCHANGEABLE
TAP,THREAD CUTTING
54767
2920-00-609-0113INTERCHANGEABLE
LEAD ASSY,ELECTRICA
XH4759
6685-01-360-4548INTERCHANGEABLE
TEMPERATURE INDICATING COMPOUND
T125
5360-01-399-5155INTERCHANGEABLE
SPRING,FLAT
T125
6140-01-414-4588INTERCHANGEABLE
BATTERY,STORAGE
T-125
4920-01-506-4264INTERCHANGEABLE
FIXTURE,AIRCRAFT MAINTENANCE

Frequently Asked Questions

What is NSN 3439-00-277-7556?

NSN 3439-00-277-7556 is a Tip,electric Soldering Iron, manufactured by Hexacon Electric Company, classified under FSC 3439 (No Item Name Available). Status: active.

What are the part numbers for NSN 3439-00-277-7556?

NSN 3439-00-277-7556 has 1 cross-referenced part number: T125 (Hexacon Electric Company).

What NSN replaces 3439-00-277-7556?

There are 10 known substitutes for 3439-00-277-7556: 3110-00-100-4165, 5920-00-228-4493, 5975-00-245-1669 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of T125?

Key specifications for T125: Tip Diameter: 0.250 INCHES NOMINAL IN; Mounting End Diameter: 0.562 INCHES NOMINAL IN; Tiplet Accommodation: NOT INCLUDED; Material: COPPER ALLOY. 14 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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