The Flux,soldering, cataloged under National Stock Number 3439-01-576-3775, 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 Illinois Tool Works Inc. Div Itw Chemtronics. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3439-01-576-3775 |
| Primary Part Number | 2.25L |
| Item Name | Flux,soldering |
| FSC / FSG | 3439 / 34 — Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories |
| Manufacturer | Illinois Tool Works Inc. Div Itw Chemtronics |
| Status | ACTIVE |
| 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 |
|---|---|
| 2.25L PRIMARY | Illinois Tool Works Inc. Div Itw Chemtronics (USA) |
NSN 3439-01-576-3775 is a Flux,soldering, manufactured by Illinois Tool Works Inc. Div Itw Chemtronics, classified under FSC 3439, Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories. Status: active.
NSN 3439-01-576-3775 has 1 manufacturer part number on file: 2.25L (Illinois Tool Works Inc. Div Itw Chemtronics).
1 possible match (shared part number, not a government interchangeability claim): 8415-01-661-3971. Verify interchangeability with system specifications before substitution.
Key specifications for 2.25L: Special Features: NON-CORROSIVE TYPE R ROSIN FLUX; Part Name Assigned by Controlling Agency: CHEM-WIK ROSIN; End Item Identification: DESOLDERING WICK. 0 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.