General Characteristics Item Description: COPPER,BUS BAR,TOP BAR 10.500 BY 2.750 BY 1.250 BY 0.250 IN.,BOTTOM BAR 10.500 BY 2.500 BY 1.250 BY 0.250 IN. IN
Identification
NSN: 3439-00-348-1743
NIIN: 003481743
FSC: 3439 — Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories
FSG: 34 — Metalworking Machinery (continued)
General Description
The Heat Sink Set, cataloged under National Stock Number 3439-00-348-1743, is classified within Federal Supply Class 3439 (Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories) of the Metalworking Machinery (continued) group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
3439-00-348-1743
Item Name
Heat Sink Set
FSC / FSG
3439 / 34 — Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories
Status
ACTIVE
General Characteristics Item Description
COPPER,BUS BAR,TOP BAR 10.500 BY 2.750 BY 1.250 BY 0.250 IN.,BOTTOM BAR 10.500 BY 2.500 BY 1.250 BY 0.250 IN. IN
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Criticality Code
N
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
MNE730127
3/2Design control — primary reference
U.S. Government activity
No interchangeability data on file.
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 3439-00-348-1743?
NSN 3439-00-348-1743 is a Heat Sink Set, classified under FSC 3439, Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories. Status: active.
What are the specifications of 3439-00-348-1743?
Key specifications for 3439-00-348-1743: General Characteristics Item Description: COPPER,BUS BAR,TOP BAR 10.500 BY 2.750 BY 1.250 BY 0.250 IN.,BOTTOM BAR 10.500 BY 2.500 BY 1.250 BY 0.250 IN. IN. 1 specification is documented in the U.S. Government catalog.
Is NSN 3439-00-348-1743 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.