The Solder,lead Alloy, cataloged under National Stock Number 3439-00-640-3517, 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 5 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3439-00-640-3517 |
| Item Name | Solder,lead Alloy |
| FSC / FSG | 3439 / 34 — Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories |
| Status | ACTIVE |
| Content Within Each Unit Package | 1 LB LBS |
| Physical Form | RIBBON |
| Width | 0.250 INCHES NOMINAL IN |
| Chemical Composition Percentage | LEAD-57.54 PCT,TIN-41.5 PCT,ANTIMONY-0.5 PCT,BISMUTH-0.25 PCT,COPPER-0.08 PCT,OTHERS-0.08 PCT,ARSENIC-0.02 PCT,IRON-0.02 PCT,ALUMINUM-0.005 PCT,ZINC-0.005 PCT |
| Thickness | 0.063 INCHES NOMINAL IN |
| 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 |
|---|---|
| SN40RS 0.063X0.250 1LB | 2/2 Government specification standardization U.S. Government activity |
| QQ-S-571 | 4/1 Identification reference U.S. Government activity |
NSN 3439-00-640-3517 is a Solder,lead Alloy, classified under FSC 3439, Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories. Status: active.
Key specifications for 3439-00-640-3517: Content Within Each Unit Package: 1 LB LBS; Physical Form: RIBBON; Width: 0.250 INCHES NOMINAL IN; Chemical Composition Percentage: LEAD-57.54 PCT,TIN-41.5 PCT,ANTIMONY-0.5 PCT,BISMUTH-0.25 PCT,COPPER-0.08 PCT,OTHERS-0.08 PCT,ARSENIC-0.02 PCT,IRON-0.02 PCT,ALUMINUM-0.005 PCT,ZINC-0.005 PCT. 5 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.