Nondefinitive Spec/std Data: SB5 COMPOSITION AND W FORM AND RFLUX TYPE AND +3 FLUX PERCENTAGE
Content Within Each Unit Package: 1 LB LBS
Physical Form: WIRE
Chemical Composition Percentage: TIN 94; ANTIMONY 6; LEAD 0.2; COPPER 0.08; IRON 0.08; ARSENIC 0.05; ALUMINUM 0.03; OTHERS 0.03; ZINC 0.03; CADMIUM 0.001
Identification
NSN: 3439-00-239-2939
NIIN: 002392939
FSC: 3439 — Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories
FSG: 34 — Metalworking Machinery (continued)
General Description
The Solder,tin Alloy, cataloged under National Stock Number 3439-00-239-2939, 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 6 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
3439-00-239-2939
Item Name
Solder,tin Alloy
FSC / FSG
3439 / 34 — Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories
Status
ACTIVE
Wire Core Type
ROSIN
Diameter
0.032 INCHES NOMINAL IN
Nondefinitive Spec/std Data
SB5 COMPOSITION AND W FORM AND RFLUX TYPE AND +3 FLUX PERCENTAGE
Content Within Each Unit Package
1 LB LBS
Physical Form
WIRE
Chemical Composition Percentage
TIN 94; ANTIMONY 6; LEAD 0.2; COPPER 0.08; IRON 0.08; ARSENIC 0.05; ALUMINUM 0.03; OTHERS 0.03; ZINC 0.03; CADMIUM 0.001
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Hazardous per DLA record (HMIC Y)
Criticality Code
X
⇄Related Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3439-00-309-3006RC4001012PPOSSIBLE MATCH
SOLDER,LEAD ALLOY
Possible match (shared part number)Raytheon Company Dba Raytheon
3439-00-473-2000SN63WRMAP3 0.063 1LBPOSSIBLE MATCH
SOLDER,TIN ALLOY
Possible match (shared part number)American Society for Testing and Materials Dba Astm International
3439-01-010-1684SN96WRMAP3 0.062 1LBPOSSIBLE MATCH
SOLDER,TIN ALLOY
Possible match (shared part number)American Society for Testing and Materials Dba Astm International
3439-01-133-8861SN60PRAB2POSSIBLE MATCH
SOLDER,PASTE
Possible match (shared part number)American Society for Testing and Materials Dba Astm International
3439-01-423-0592SN60WRMAP3POSSIBLE MATCH
SOLDER,TIN ALLOY
Possible match (shared part number)Honeywell International, Inc Div Aerospace-Tucson
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
SN95SB05WRP3 0.032 1LB
5/9Secondary reference
U.S. Government activity
SB5WRP3 0.032 1LB
5/9Secondary reference
U.S. Government activity
SB5WRP3 0.032 1LB
3/2Design control — primary reference
U.S. Government activity
QQ-S-571
5/9Secondary reference
U.S. Government activity
ASTM B32
3/1Design control — primary reference
U.S. Government activity
ASTM B32-96
5/9Secondary reference
U.S. Government activity
Related Parts
3439-00-309-3006POSSIBLE MATCH
SOLDER,LEAD ALLOY
RC4001012P
3439-00-473-2000POSSIBLE MATCH
SOLDER,TIN ALLOY
SN63WRMAP3 0.063 1LB
3439-01-010-1684POSSIBLE MATCH
SOLDER,TIN ALLOY
SN96WRMAP3 0.062 1LB
3439-01-133-8861POSSIBLE MATCH
SOLDER,PASTE
SN60PRAB2
3439-01-423-0592POSSIBLE MATCH
SOLDER,TIN ALLOY
SN60WRMAP3
Frequently Asked Questions
What is NSN 3439-00-239-2939?
NSN 3439-00-239-2939 is a Solder,tin Alloy, classified under FSC 3439, Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories. Status: active.
What NSN replaces 3439-00-239-2939?
5 possible matches (shared part number, not a government interchangeability claim): 3439-00-309-3006, 3439-00-473-2000, 3439-01-010-1684. Verify interchangeability with system specifications before substitution.
What are the specifications of 3439-00-239-2939?
Key specifications for 3439-00-239-2939: Wire Core Type: ROSIN; Diameter: 0.032 INCHES NOMINAL IN; Nondefinitive Spec/std Data: SB5 COMPOSITION AND W FORM AND RFLUX TYPE AND +3 FLUX PERCENTAGE; Content Within Each Unit Package: 1 LB LBS. 6 specifications are documented in the U.S. Government catalog.
Is NSN 3439-00-239-2939 hazardous material?
Hazardous per DLA record (HMIC Y). 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.