PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AB-2Flux,brazing

Superior Flux & Manufacturing Co · NSN 3439-01-549-7785 · FSC 3439 · No Item Name Available
Verified by PartsTable
NSN 3439-01-549-7785 — this item is cataloged by the U.S. Government under National Stock Number 3439-01-549-7785. Primary manufacturer part number: AB-2.
Features
  • Flux,brazing — FSC 3439
  • Material for Which Formulated: BRASS AND BRONZE AND COPPER AND STEEL AND STEEL, CORROSION RESISTING AND IRON, MALLEABLE
  • Physical Form: POWDER
  • 2 verified cross-references
  • Primary manufacturer: Superior Flux & Manufacturing Co
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Flux,brazing, cataloged under National Stock Number 3439-01-549-7785, is classified within Federal Supply Class 3439 (No Item Name Available) of the Metalworking Machinery (continued) group. The primary manufacturer of record is Superior Flux & Manufacturing Co. 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3439-01-549-7785
Primary Part NumberAB-2
Item NameFlux,brazing
FSC / FSG3439 / 34 — No Item Name Available
ManufacturerSuperior Flux & Manufacturing Co
StatusACTIVE
Material for Which FormulatedBRASS AND BRONZE AND COPPER AND STEEL AND STEEL, CORROSION RESISTING AND IRON, MALLEABLE
Physical FormPOWDER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
6670-00-237-9994AB2 INTERCHANGEABLE
Balance,analytical
Vertex Industries Inc Torbal Div
4730-01-013-1580AB2 INTERCHANGEABLE
Coupling Half,quick Disconnect
Dixon Valve & Coupling Company, Llc Div Dixon Fire
5930-01-534-7388PAB-2 INTERCHANGEABLE
Switch,toggle
Pico Macom, Inc
5210-01-655-0128AB-2 INTERCHANGEABLE
Gage Block
Suburban Tool, Inc. Dba Taft-Peirce Metrology Co.
Cross-Reference Index
Part NumberManufacturer
ANTI-BORAX NUMBER 2 Superior Flux & Manufacturing Co (USA)
AB-2 PRIMARY Superior Flux & Manufacturing Co (USA)
Related Parts
6670-00-237-9994INTERCHANGEABLE
BALANCE,ANALYTICAL
AB2
4730-01-013-1580INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
AB2
5930-01-534-7388INTERCHANGEABLE
SWITCH,TOGGLE
PAB-2
5210-01-655-0128INTERCHANGEABLE
GAGE BLOCK
AB-2

Frequently Asked Questions

What is NSN 3439-01-549-7785?

NSN 3439-01-549-7785 is a Flux,brazing, manufactured by Superior Flux & Manufacturing Co, classified under FSC 3439 (No Item Name Available). Status: active.

What are the part numbers for NSN 3439-01-549-7785?

NSN 3439-01-549-7785 has 2 cross-referenced part numbers: ANTI-BORAX NUMBER 2 (Superior Flux & Manufacturing Co), AB-2 (Superior Flux & Manufacturing Co).

What NSN replaces 3439-01-549-7785?

There are 4 known substitutes for 3439-01-549-7785: 6670-00-237-9994, 4730-01-013-1580, 5930-01-534-7388 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AB-2?

Key specifications for AB-2: Material for Which Formulated: BRASS AND BRONZE AND COPPER AND STEEL AND STEEL, CORROSION RESISTING AND IRON, MALLEABLE; Special Features: WHITE; 1.5 (AVERAGE) SPECIFIC GRAVITY; 760-1205 DEG C ACTIVE TEMPERATURE RANGE; BRAZES BRASS, BRONZE, COPPER, STEEL, STAINLESS STEEL, MALLAEABLE IRON AND HEAT-RESISTANT ALLOYS; DISOLVES AND REMOVES OXIDES DEGC; Physical Form: POWDER. 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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