PartsTable TECHNICAL DATA SHEET
AUGUST 2026Technical Data Sheet

AWSA5.8-92 BCUP-2-0.063Brazing Alloy,copper

American Welding Society, Inc. · NSN 3439-00-262-4210 · FSC 3439 · No Item Name Available
Verified by PartsTable
NSN 3439-00-262-4210 — this item is cataloged by the U.S. Government under National Stock Number 3439-00-262-4210. Primary manufacturer part number: AWSA5.8-92 BCUP-2-0.063.
Features
  • Brazing Alloy,copper — FSC 3439
  • Chemical Composition Percentage: COPPER 92.35; PHOSPHORUS 7.5; OTHERS 0.15
  • Nondefinitive Spec/std Data: BCUP-2 CLASS
  • Physical Form: ROD
  • Length: 36.000 INCHES NOMINAL IN
  • Diameter: 0.063 INCHES NOMINAL IN
  • Flux Feature: NOT INCLUDED
  • 3 verified cross-references
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Brazing Alloy,copper, cataloged under National Stock Number 3439-00-262-4210, is classified within Federal Supply Class 3439 (No Item Name Available) of the Metalworking Machinery (continued) group. The primary manufacturer of record is American Welding Society, Inc.. 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3439-00-262-4210
Primary Part NumberAWSA5.8-92 BCUP-2-0.063
Item NameBrazing Alloy,copper
FSC / FSG3439 / 34 — No Item Name Available
ManufacturerAmerican Welding Society, Inc.
StatusACTIVE
Chemical Composition PercentageCOPPER 92.35; PHOSPHORUS 7.5; OTHERS 0.15
Nondefinitive Spec/std DataBCUP-2 CLASS
Physical FormROD
Length36.000 INCHES NOMINAL IN
Diameter0.063 INCHES NOMINAL IN
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.
3439-00-262-4174 INTERCHANGEABLE
Brazing Alloy,copper
3439-00-262-4203 INTERCHANGEABLE
Brazing Alloy,copper
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)
AWSA5.8-92 BCUP-2-0.063 PRIMARY American Welding Society, Inc. (USA)
AWS A5.8 American Welding Society, Inc. (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
3439-00-262-4174INTERCHANGEABLE
BRAZING ALLOY,COPPER
3439-00-262-4203INTERCHANGEABLE
BRAZING ALLOY,COPPER
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 3439-00-262-4210?

NSN 3439-00-262-4210 is a Brazing Alloy,copper, manufactured by American Welding Society, Inc., classified under FSC 3439 (No Item Name Available). Status: active.

What are the part numbers for NSN 3439-00-262-4210?

NSN 3439-00-262-4210 has 3 cross-referenced part numbers: QQB650 (Federal Specifications Promulgated by General Services Administration Washington DC), AWSA5.8-92 BCUP-2-0.063 (American Welding Society, Inc.), AWS A5.8 (American Welding Society, Inc.).

What NSN replaces 3439-00-262-4210?

There are 11 known substitutes for 3439-00-262-4210: 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 AWSA5.8-92 BCUP-2-0.063?

Key specifications for AWSA5.8-92 BCUP-2-0.063: Chemical Composition Percentage: COPPER 92.35; PHOSPHORUS 7.5; OTHERS 0.15; Nondefinitive Spec/std Data: BCUP-2 CLASS; Physical Form: ROD; Length: 36.000 INCHES NOMINAL IN. 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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