The Brazing Alloy,silver, cataloged under National Stock Number 3439-01-641-2149, 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 Naval Inventory Control Point Mechanicsburg. Government technical data includes 8 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3439-01-641-2149 |
| Primary Part Number | QQB654GRIV/D1.179/W.188/T.05L1 |
| Item Name | Brazing Alloy,silver |
| FSC / FSG | 3439 / 34 — Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Precious Material | SILVER |
| Criticality Code Justification | ZZZX |
| Diameter | 1.179 INCHES NOMINAL IN |
| Departure From Cited Designator | MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS |
| Physical Form | RING |
| Width | 0.188 INCHES NOMINAL IN |
| Chemical Composition Percentage | SILVER 49.0-51.0; COPPER 14.5-16.5; ZINC 14.5-18.5; CADMIUM 17.0-19.0; OTHER 0.15 |
| Thickness | 0.05 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 | S |
| Part Number | Manufacturer |
|---|---|
| QQB654GRIV/D1.179/W.188/T.05L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| QQB654GRIV/D1.179/W.188/T.05 | 4/1 Identification reference U.S. Government activity |
NSN 3439-01-641-2149 is a Brazing Alloy,silver, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 3439, Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories. Status: active.
NSN 3439-01-641-2149 has 1 manufacturer part number on file: QQB654GRIV/D1.179/W.188/T.05L1 (Naval Inventory Control Point Mechanicsburg).
Key specifications for QQB654GRIV/D1.179/W.188/T.05L1: Precious Material: SILVER; Criticality Code Justification: ZZZX; Diameter: 1.179 INCHES NOMINAL IN; Departure From Cited Designator: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS. 8 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.