PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-F-14256TYPEAFlux,soldering

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 3439-01-141-2161 · FSC 3439 · No Item Name Available
Verified by PartsTable
NSN 3439-01-141-2161 — this item is cataloged by the U.S. Government under National Stock Number 3439-01-141-2161. Primary manufacturer part number: MIL-F-14256TYPEA.
Features
  • Flux,soldering — FSC 3439
  • Material for Which Formulated: ANY ACCEPTABLE
  • Physical Form: LIQUID
  • 2 verified cross-references
  • Primary manufacturer: Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Flux,soldering, cataloged under National Stock Number 3439-01-141-2161, is classified within Federal Supply Class 3439 (No Item Name Available) of the Metalworking Machinery (continued) group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3439-01-141-2161
Primary Part NumberMIL-F-14256TYPEA
Item NameFlux,soldering
FSC / FSG3439 / 34 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Material for Which FormulatedANY ACCEPTABLE
Physical FormLIQUID
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
3439-00-009-8808 INTERCHANGEABLE
Flux,soldering
3439-00-069-5815FORMULA 197 1QT INTERCHANGEABLE
Flux,soldering
Kester Inc
3439-00-162-8388 INTERCHANGEABLE
Flux,soldering
3439-00-220-3827 INTERCHANGEABLE
Flux,soldering
3439-00-400-1972 INTERCHANGEABLE
Flux,soldering
3439-00-752-87281544 SOLDER INTERCHANGEABLE
Flux,soldering
Kester Inc
3439-01-007-5494 INTERCHANGEABLE
Flux,soldering
3439-01-045-7940 INTERCHANGEABLE
Flux,soldering
3439-01-373-7966 INTERCHANGEABLE
Flux,soldering
Cross-Reference Index
Part NumberManufacturer
MIL-F-14256TYPEA Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-F-14256 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
3439-00-009-8808INTERCHANGEABLE
FLUX,SOLDERING
3439-00-069-5815INTERCHANGEABLE
FLUX,SOLDERING
FORMULA 197 1QT
3439-00-162-8388INTERCHANGEABLE
FLUX,SOLDERING
3439-00-220-3827INTERCHANGEABLE
FLUX,SOLDERING
3439-00-400-1972INTERCHANGEABLE
FLUX,SOLDERING
3439-00-752-8728INTERCHANGEABLE
FLUX,SOLDERING
1544 SOLDER
3439-01-007-5494INTERCHANGEABLE
FLUX,SOLDERING
3439-01-045-7940INTERCHANGEABLE
FLUX,SOLDERING
3439-01-373-7966INTERCHANGEABLE
FLUX,SOLDERING

Frequently Asked Questions

What is NSN 3439-01-141-2161?

NSN 3439-01-141-2161 is a Flux,soldering, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 3439 (No Item Name Available). Status: active.

What are the part numbers for NSN 3439-01-141-2161?

NSN 3439-01-141-2161 has 2 cross-referenced part numbers: MIL-F-14256TYPEA (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-F-14256 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 3439-01-141-2161?

There are 9 known substitutes for 3439-01-141-2161: 3439-00-009-8808, 3439-00-069-5815, 3439-00-162-8388 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-F-14256TYPEA?

Key specifications for MIL-F-14256TYPEA: Material for Which Formulated: ANY ACCEPTABLE; Special Features: LIGHTLY ACTIVATED,FOR SOLDER JOINTS FOR ELECTRIC AND ELECTRONIC CIRCUITS; Physical Form: LIQUID. 3 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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