PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ST4Tip,electric Soldering Iron

Apex Tool Group · NSN 3439-01-576-4074 · FSC 3439 · No Item Name Available
Verified by PartsTable
NSN 3439-01-576-4074 — this item is cataloged by the U.S. Government under National Stock Number 3439-01-576-4074. Primary manufacturer part number: ST4.
Features
  • Tip,electric Soldering Iron — FSC 3439
  • Temp Rating: 800.0 FAHRENHEIT DEGF
  • 2 verified cross-references
  • Primary manufacturer: Apex Tool Group
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Tip,electric Soldering Iron, cataloged under National Stock Number 3439-01-576-4074, is classified within Federal Supply Class 3439 (No Item Name Available) of the Metalworking Machinery (continued) group. The primary manufacturer of record is Apex Tool Group. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3439-01-576-4074
Primary Part NumberST4
Item NameTip,electric Soldering Iron
FSC / FSG3439 / 34 — No Item Name Available
ManufacturerApex Tool Group
StatusACTIVE
Temp Rating800.0 FAHRENHEIT DEGF
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6675-00-255-1374ST4 INTERCHANGEABLE
Stereoscope,lens-Mirror,aerial P
Leica Geosystems Inc.
5975-00-404-1034 INTERCHANGEABLE
Hub,raintight
6740-00-464-9206ST4 INTERCHANGEABLE
Standpipe,tank,film
Calumet Photographic, Inc.
2350-00-892-5424 INTERCHANGEABLE
Carrier,cargo
6250-00-960-6822ST4 INTERCHANGEABLE
Focus Centering,sta
Esuk Aerospace and Simulation Ltd
5310-01-023-9110B0375-020S INTERCHANGEABLE
Washer,spring Tension
Barnes Group Inc
5961-01-030-9552BS08D INTERCHANGEABLE
Semiconductor Device,diode
Powerex, Inc.
3439-01-104-3393ST-4 INTERCHANGEABLE
Stand,soldering Iron Miniature
M.m. Newman Corp
5940-01-115-4455192180106 INTERCHANGEABLE
Terminal,lug
Molex-Etc Inc Sub of Molex Inc
6685-01-242-928613226E8542 INTERCHANGEABLE
Thermowell
Cecom Lr Center
Cross-Reference Index
Part NumberManufacturer
ST4 Apex Tool Group (USA)
ST4 Apex Tool Group, Llc (USA)
Related Parts
6675-00-255-1374INTERCHANGEABLE
STEREOSCOPE,LENS-MIRROR,AERIAL P
ST4
5975-00-404-1034INTERCHANGEABLE
HUB,RAINTIGHT
6740-00-464-9206INTERCHANGEABLE
STANDPIPE,TANK,FILM
ST4
2350-00-892-5424INTERCHANGEABLE
CARRIER,CARGO
6250-00-960-6822INTERCHANGEABLE
FOCUS CENTERING,STA
ST4
5310-01-023-9110INTERCHANGEABLE
WASHER,SPRING TENSION
B0375-020S
5961-01-030-9552INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
BS08D
3439-01-104-3393INTERCHANGEABLE
STAND,SOLDERING IRON MINIATURE
ST-4
5940-01-115-4455INTERCHANGEABLE
TERMINAL,LUG
192180106
6685-01-242-9286INTERCHANGEABLE
THERMOWELL
13226E8542
6685-01-414-1296INTERCHANGEABLE
THERMOMETER,SELF-INDICATING,DIGI
ST4
4310-01-504-4177INTERCHANGEABLE
PNEUMATIC MUFFLER,EXHAUST-INTAKE

Frequently Asked Questions

What is NSN 3439-01-576-4074?

NSN 3439-01-576-4074 is a Tip,electric Soldering Iron, manufactured by Apex Tool Group, classified under FSC 3439 (No Item Name Available). Status: active.

What are the part numbers for NSN 3439-01-576-4074?

NSN 3439-01-576-4074 has 2 cross-referenced part numbers: ST4 (Apex Tool Group), ST4 (Apex Tool Group, Llc).

What NSN replaces 3439-01-576-4074?

There are 12 known substitutes for 3439-01-576-4074: 6675-00-255-1374, 5975-00-404-1034, 6740-00-464-9206 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of ST4?

Key specifications for ST4: End Item Identification: 4940-01-554-0475;TOOL AND EQUIPMENT KIT, RADIO SET; Temp Rating: 800.0 FAHRENHEIT DEGF; Part Name Assigned by Controlling Agency: SOLDERING TIP; Special Features: 0.187 INCH LONG IN. 4 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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