PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AA51145-2DFlux,soldering

Federal Commercial Item Description Promulgated by General Services Administration Washington DC · NSN 3439-00-250-2629 · FSC 3439 · No Item Name Available
Verified by PartsTable
NSN 3439-00-250-2629 — this item is cataloged by the U.S. Government under National Stock Number 3439-00-250-2629. Primary manufacturer part number: AA51145-2D.
Features
  • Flux,soldering — FSC 3439
  • Specific Metal for Which Formulated: HEAT RESISTANT STEELS AND HIGH CHROMIUM ALLOYS
  • Material for Which Formulated: LEAD TIN ALLOY
  • Nondefinitive Spec/std Data: 2 TYPE AND B FORM
  • Content Within Each Unit Package: 4 OZ OZ
  • Physical Form: LIQUID
  • Environmental Protection: OXIDATION RESISTANT
  • 3 verified cross-references
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Flux,soldering, cataloged under National Stock Number 3439-00-250-2629, is classified within Federal Supply Class 3439 (No Item Name Available) of the Metalworking Machinery (continued) group. The primary manufacturer of record is Federal Commercial Item Description Promulgated by General Services Administration Washington DC. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3439-00-250-2629
Primary Part NumberAA51145-2D
Item NameFlux,soldering
FSC / FSG3439 / 34 — No Item Name Available
ManufacturerFederal Commercial Item Description Promulgated by General Services Administration Washington DC
StatusACTIVE
Specific Metal for Which FormulatedHEAT RESISTANT STEELS AND HIGH CHROMIUM ALLOYS
Material for Which FormulatedLEAD TIN ALLOY
Nondefinitive Spec/std Data2 TYPE AND B FORM
Content Within Each Unit Package4 OZ OZ
Physical FormLIQUID
Environmental ProtectionOXIDATION RESISTANT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
3439-00-255-4566 INTERCHANGEABLE
Flux,soldering
3439-00-255-4571 INTERCHANGEABLE
Flux,soldering
3439-00-629-7489 INTERCHANGEABLE
Flux,soldering
3439-01-069-9176 INTERCHANGEABLE
Flux,soldering
3439-01-236-9572 INTERCHANGEABLE
Flux,soldering
3439-01-242-9115 INTERCHANGEABLE
Flux,soldering
Cross-Reference Index
Part NumberManufacturer
AA51145-2D Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
A-A-51145 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
FED0F506TYPE2F0RMB Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
3439-00-255-4566INTERCHANGEABLE
FLUX,SOLDERING
3439-00-255-4571INTERCHANGEABLE
FLUX,SOLDERING
3439-00-629-7489INTERCHANGEABLE
FLUX,SOLDERING
3439-01-069-9176INTERCHANGEABLE
FLUX,SOLDERING
3439-01-236-9572INTERCHANGEABLE
FLUX,SOLDERING
3439-01-242-9115INTERCHANGEABLE
FLUX,SOLDERING

Frequently Asked Questions

What is NSN 3439-00-250-2629?

NSN 3439-00-250-2629 is a Flux,soldering, manufactured by Federal Commercial Item Description Promulgated by General Services Administration Washington DC, classified under FSC 3439 (No Item Name Available). Status: active.

What are the part numbers for NSN 3439-00-250-2629?

NSN 3439-00-250-2629 has 3 cross-referenced part numbers: AA51145-2D (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), A-A-51145 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), FED0F506TYPE2F0RMB (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 3439-00-250-2629?

There are 6 known substitutes for 3439-00-250-2629: 3439-00-255-4566, 3439-00-255-4571, 3439-00-629-7489 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AA51145-2D?

Key specifications for AA51145-2D: Specific Metal for Which Formulated: HEAT RESISTANT STEELS AND HIGH CHROMIUM ALLOYS; Material for Which Formulated: LEAD TIN ALLOY; Nondefinitive Spec/std Data: 2 TYPE AND B FORM; Content Within Each Unit Package: 4 OZ OZ. 6 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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