The Preformed Rings,brazing, cataloged under National Stock Number 3439-01-363-3786, 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 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3439-01-363-3786 |
| Item Name | Preformed Rings,brazing |
| FSC / FSG | 3439 / 34 — Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories |
| Status | ACTIVE |
| General Characteristics Item Description | SILVER ALLOY; 2.091 IN. DIAMETER; 0.250 IN. WIDTH 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 |
|---|---|
| 803-1385941 PC-6 1-1/2NPS GR-4 | 3/1 Design control — primary reference U.S. Government activity |
NSN 3439-01-363-3786 is a Preformed Rings,brazing, classified under FSC 3439, Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories. Status: active.
Key specifications for 3439-01-363-3786: General Characteristics Item Description: SILVER ALLOY; 2.091 IN. DIAMETER; 0.250 IN. WIDTH IN; Special Features: 1-1/2 IN. NPS; 3000 PSI; GAP OF BRAZING RING 0.073 IN. MINIMUM,0.167 IN. MAXIMUM IN. 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.