PartsTable TECHNICAL DATA SHEET
AUGUST 2026Technical Data Sheet

QQB650Brazing Alloy,copper

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 3439-00-262-4174 · FSC 3439 · No Item Name Available
Verified by PartsTable
NSN 3439-00-262-4174 — this item is cataloged by the U.S. Government under National Stock Number 3439-00-262-4174. Primary manufacturer part number: QQB650.
Features
  • Brazing Alloy,copper — FSC 3439
  • Diameter: 0.125 INCHES NOMINAL IN
  • Nondefinitive Spec/std Data: C CLASS AND ROD FORM
  • Length: 36.000 INCHES NOMINAL IN
  • Chemical Composition Percentage: COPPER 72; ZINC 27.6; IRON 0.1
  • Physical Form: ROD
  • Flux Feature: NOT INCLUDED
  • 1 verified cross-reference
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Brazing Alloy,copper, cataloged under National Stock Number 3439-00-262-4174, is classified within Federal Supply Class 3439 (No Item Name Available) of the Metalworking Machinery (continued) group. The primary manufacturer of record is Federal Specifications 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 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3439-00-262-4174
Primary Part NumberQQB650
Item NameBrazing Alloy,copper
FSC / FSG3439 / 34 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusACTIVE
Diameter0.125 INCHES NOMINAL IN
Nondefinitive Spec/std DataC CLASS AND ROD FORM
Length36.000 INCHES NOMINAL IN
Chemical Composition PercentageCOPPER 72; ZINC 27.6; IRON 0.1
Physical FormROD
Flux FeatureNOT INCLUDED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
3439-00-052-1899AWSA5.8-92 BCUP-5-0.063 INTERCHANGEABLE
Brazing Alloy,silver
American Welding Society, Inc.
3439-00-188-69823132 INTERCHANGEABLE
Brazing Alloy,copper
Alter Harry Co the Div of T E C
3439-00-188-6983 INTERCHANGEABLE
Brazing Alloy,copper
3439-00-204-2555 INTERCHANGEABLE
Brazing Alloy,copper
3439-00-224-3580AWSA5.8-92 BCUP-5 INTERCHANGEABLE
Brazing Alloy,silver
American Welding Society, Inc.
3439-00-262-4203 INTERCHANGEABLE
Brazing Alloy,copper
3439-00-262-4210AWSA5.8-92 BCUP-2-0.063 INTERCHANGEABLE
Brazing Alloy,copper
American Welding Society, Inc.
3439-00-262-4211AWSA5.8-92 INTERCHANGEABLE
Brazing Alloy,copper
American Welding Society, Inc.
3439-00-262-4212AWSA5.8-92 BCUP-2-0.125 INTERCHANGEABLE
Brazing Alloy,copper
American Welding Society, Inc.
3439-00-411-2338 INTERCHANGEABLE
Brazing Alloy,silver
Cross-Reference Index
Part NumberManufacturer
QQB650 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
3439-00-052-1899INTERCHANGEABLE
BRAZING ALLOY,SILVER
AWSA5.8-92 BCUP-5-0.063
3439-00-188-6982INTERCHANGEABLE
BRAZING ALLOY,COPPER
3132
3439-00-188-6983INTERCHANGEABLE
BRAZING ALLOY,COPPER
3439-00-204-2555INTERCHANGEABLE
BRAZING ALLOY,COPPER
3439-00-224-3580INTERCHANGEABLE
BRAZING ALLOY,SILVER
AWSA5.8-92 BCUP-5
3439-00-262-4203INTERCHANGEABLE
BRAZING ALLOY,COPPER
3439-00-262-4210INTERCHANGEABLE
BRAZING ALLOY,COPPER
AWSA5.8-92 BCUP-2-0.063
3439-00-262-4211INTERCHANGEABLE
BRAZING ALLOY,COPPER
AWSA5.8-92
3439-00-262-4212INTERCHANGEABLE
BRAZING ALLOY,COPPER
AWSA5.8-92 BCUP-2-0.125
3439-00-411-2338INTERCHANGEABLE
BRAZING ALLOY,SILVER
3439-01-268-0532INTERCHANGEABLE
BRAZING ALLOY,SILVER
AWSA5.8-92 BCUP-3

Frequently Asked Questions

What is NSN 3439-00-262-4174?

NSN 3439-00-262-4174 is a Brazing Alloy,copper, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 3439 (No Item Name Available). Status: active.

What are the part numbers for NSN 3439-00-262-4174?

NSN 3439-00-262-4174 has 1 cross-referenced part number: QQB650 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 3439-00-262-4174?

There are 11 known substitutes for 3439-00-262-4174: 3439-00-052-1899, 3439-00-188-6982, 3439-00-188-6983 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of QQB650?

Key specifications for QQB650: Diameter: 0.125 INCHES NOMINAL IN; Nondefinitive Spec/std Data: C CLASS AND ROD FORM; Length: 36.000 INCHES NOMINAL IN; Chemical Composition Percentage: COPPER 72; ZINC 27.6; IRON 0.1. 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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