The Solder,lead Alloy, cataloged under National Stock Number 3439-00-294-4289, 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6 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3439-00-294-4289 |
| Item Name | Solder,lead Alloy |
| FSC / FSG | 3439 / 34 — Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories |
| Status | ACTIVE |
| Wire Core Type | ROSIN |
| Diameter | 0.125 INCHES NOMINAL IN |
| Nondefinitive Spec/std Data | SN40 COMPOSITION AND W FORM AND RAFLUX TYPE AND +3 FLUX PERCENTAGE |
| Content Within Each Unit Package | 5 POUND LBS |
| Physical Form | WIRE |
| Chemical Composition Percentage | LEAD 57.41; TIN 41.5; ANTIMONY 0.5; BISMUTH 0.25; COPPER 0.08; OTHERS 0.08; ARSENIC 0.02; IRON 0.02; ALUMINUM 0.005; ZINC 0.005 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| QQ-S-571 | 5/9 Secondary reference U.S. Government activity |
| SN40WRAP3 0.125 5LB | 3/2 Design control — primary reference U.S. Government activity |
| IPC J-STD-004 | 3/1 Design control — primary reference Ipc International Inc Dba Global Electronics Association |
| SN40PB60WRAP3 0.125 5LB | 5/9 Secondary reference U.S. Government activity |
| ASTM B32 | 3/1 Design control — primary reference U.S. Government activity |
| SN40WRAP3 0.125 5LB | 5/9 Secondary reference U.S. Government activity |
NSN 3439-00-294-4289 is a Solder,lead Alloy, classified under FSC 3439, Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 3439-01-071-4279, 3439-01-395-2947. Verify interchangeability with system specifications before substitution.
Key specifications for 3439-00-294-4289: Wire Core Type: ROSIN; Diameter: 0.125 INCHES NOMINAL IN; Nondefinitive Spec/std Data: SN40 COMPOSITION AND W FORM AND RAFLUX TYPE AND +3 FLUX PERCENTAGE; Content Within Each Unit Package: 5 POUND LBS. 6 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
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.