The Solder,lead-Tin Alloy, cataloged under National Stock Number 3439-01-371-6860, 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5 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3439-01-371-6860 |
| Item Name | Solder,lead-Tin Alloy |
| FSC / FSG | 3439 / 34 — Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories |
| Status | ACTIVE |
| Length | 13.500 INCHES NOMINAL IN |
| Physical Form | BAR |
| Width | 0.750 INCHES NOMINAL IN |
| Chemical Composition Percentage | TIN 63; LEAD 37 |
| Thickness | 0.375 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 |
|---|---|
| QQS571SN63B | 5/9 Secondary reference U.S. Government activity |
| SN63B | 3/2 Design control — primary reference U.S. Government activity |
| ASTM B32 | 3/1 Design control — primary reference U.S. Government activity |
| ASTM B32-95A | 5/9 Secondary reference U.S. Government activity |
NSN 3439-01-371-6860 is a Solder,lead-Tin Alloy, classified under FSC 3439, Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories. Status: active.
Key specifications for 3439-01-371-6860: Length: 13.500 INCHES NOMINAL IN; Physical Form: BAR; Special Features: USED FOR SOLDERING PRINTED CIRCUITS WHERE TEMPERATURE LIMITATIONS ARE CRITICAL AND IN APPLICATIONS WHERE AN EXTREMELY SHORT MELTING RANGE IS REQUIRED; Width: 0.750 INCHES NOMINAL IN. 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.