The Fusible Alloy, cataloged under National Stock Number 9650-01-608-4550, is classified within Federal Supply Class 9650 (Nonferrous Base Metal Refinery and Intermediate Forms) of the Ores, Minerals, and Primary Products group. The manufacturer of record is Bolton Metal Products Co. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 9650-01-608-4550 |
| Primary Part Number | LB250002 |
| Item Name | Fusible Alloy |
| FSC / FSG | 9650 / 96 — Nonferrous Base Metal Refinery and Intermediate Forms |
| Manufacturer | Bolton Metal Products Co. Inc. |
| Status | ACTIVE |
| Composition and Percentage | 57.0 MAXIMUM BY WEIGHT BISMUTH AND 26.0 MAXIMUM BY WEIGHT INDIUM AND 17.0 MAXIMUM BY WEIGHT TIN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| LB250002 PRIMARY | Bolton Metal Products Co. Inc. (USA) |
| Reference | Meaning |
|---|---|
| 5700-1 BOLTON 174 | 3/9 Design control — primary reference Bolton Metal Products Co. Inc. |
NSN 9650-01-608-4550 is a Fusible Alloy, manufactured by Bolton Metal Products Co. Inc., classified under FSC 9650, Nonferrous Base Metal Refinery and Intermediate Forms. Status: active.
NSN 9650-01-608-4550 has 1 manufacturer part number on file: LB250002 (Bolton Metal Products Co. Inc.).
Key specifications for LB250002: Composition and Percentage: 57.0 MAXIMUM BY WEIGHT BISMUTH AND 26.0 MAXIMUM BY WEIGHT INDIUM AND 17.0 MAXIMUM BY WEIGHT TIN; Special Features: MATERIAL IS ASTM B774 ALLOY 174, MELTING TEMPATURE 174 DEGREES.; Part Name Assigned by Controlling Agency: BISMUTH ALLOY INGOT. 1 specification is documented in the U.S. Government catalog.
Hazardous per DLA record (HMIC Y). 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.