The Solder,tin Alloy, cataloged under National Stock Number 3439-01-660-6003, is classified within Federal Supply Class 3439 (Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories) of the Metalworking Machinery (continued) group. The manufacturer of record is Midway Industrial Supply Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3439-01-660-6003 |
| Primary Part Number | SN63PB37-0.031-1OZ |
| Item Name | Solder,tin Alloy |
| FSC / FSG | 3439 / 34 — Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories |
| Manufacturer | Midway Industrial Supply Inc |
| Status | ACTIVE |
| Chemical Composition Percentage | TIN63.5; LEAD REM; ANTIMONY 0.50; SILVER 0.015; COPPER 0.08; CADMIUM; ALUMINUM 0.005; BISMUTH 0.25; ARSENIC 0.03; IRON 0.02; 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 |
| Part Number | Manufacturer |
|---|---|
| SN63PB37-0.031-1OZ | Midway Industrial Supply Inc (USA) |
| Reference | Meaning |
|---|---|
| SN63PB37A | 2/2 Government specification standardization U.S. Government activity |
NSN 3439-01-660-6003 is a Solder,tin Alloy, manufactured by Midway Industrial Supply Inc, classified under FSC 3439, Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories. Status: active.
NSN 3439-01-660-6003 has 1 manufacturer part number on file: SN63PB37-0.031-1OZ (Midway Industrial Supply Inc).
Key specifications for SN63PB37-0.031-1OZ: Chemical Composition Percentage: TIN63.5; LEAD REM; ANTIMONY 0.50; SILVER 0.015; COPPER 0.08; CADMIUM; ALUMINUM 0.005; BISMUTH 0.25; ARSENIC 0.03; IRON 0.02; ZINC 0.005. 1 specification is 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.