NSN 3439-01-543-8271 · NIIN 015438271 · Part number AWS A5.8 BCUP-5-0.25
American Welding Society, Inc. · FSC 3439 — Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories · FSG 34 — Metalworking Machinery (continued) · CAGE 31505
Government record, cited
NSN 3439-01-543-8271 — this item is cataloged by the U.S. Government under National Stock Number 3439-01-543-8271. Manufacturer of record part number: AWS A5.8 BCUP-5-0.25.
Also searched as3439-01-543-8271 ·
3439015438271 ·
NIIN 015438271 ·
01-543-8271 ·
FSC 3439 Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories · CAGE 31505 · AWS A5.8 BCUP-5-0.25
Manufacturer of record: American Welding Society, Inc.
Identification
NSN: 3439-01-543-8271
NIIN: 015438271
FSC: 3439 — Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories
FSG: 34 — Metalworking Machinery (continued)
Primary part number: AWS A5.8 BCUP-5-0.25
Manufacturer: American Welding Society, Inc.
General Description
The Brazing Alloy,silver, cataloged under National Stock Number 3439-01-543-8271, is classified within Federal Supply Class 3439 (Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories) of the Metalworking Machinery (continued) group. The manufacturer of record is American Welding Society, Inc.. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
3439-01-543-8271
Primary Part Number
AWS A5.8 BCUP-5-0.25
Item Name
Brazing Alloy,silver
FSC / FSG
3439 / 34 — Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories
Manufacturer
American Welding Society, Inc.
Status
ACTIVE
Flux Feature
NOT INCLUDED
Physical Form
WIRE
Chemical Composition Percentage
SILVER 15 PCT; PHOSPHOROUS 5 PCT; COPPER 80 PCT
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Other items in FSC 3439 — Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3439-00-001-0002
3439-00-001-0002 · Item name not on file
3439-00-001-4196
3439-00-001-4196 · Item name not on file
3439-00-001-4197
3439-00-001-4197 · Item name not on file
3439-00-003-1195
3439-00-003-1195 · Item name not on file
3439-00-003-8601
SOLDER,LEAD ALLOY
3439-00-003-8602
SOLDER,LEAD-TIN ALLOY
3439-00-004-0913
HOUSING,ELECTRIC SO
3439-00-004-0915
SOLDERING GUN
Frequently Asked Questions
What is NSN 3439-01-543-8271?
NSN 3439-01-543-8271 is a Brazing Alloy,silver, manufactured by American Welding Society, Inc., classified under FSC 3439, Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories. Status: active.
What part numbers are listed for NSN 3439-01-543-8271?
NSN 3439-01-543-8271 has 1 manufacturer part number on file: AWS A5.8 BCUP-5-0.25 (American Welding Society, Inc.).
What are the specifications of AWS A5.8 BCUP-5-0.25?
Key specifications for AWS A5.8 BCUP-5-0.25: Flux Feature: NOT INCLUDED; Physical Form: WIRE; Chemical Composition Percentage: SILVER 15 PCT; PHOSPHOROUS 5 PCT; COPPER 80 PCT. 3 specifications are documented in the U.S. Government catalog.
Is NSN 3439-01-543-8271 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.