The Radioactive Test Sample, cataloged under National Stock Number 6665-01-376-9918, is classified within Federal Supply Class 6665 (Hazard-detecting Instruments and Apparatus) of the Instruments and Laboratory Equipment group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6665-01-376-9918 |
| Primary Part Number | A-453-1 MODEL 528QA |
| Item Name | Radioactive Test Sample |
| FSC / FSG | 6665 / 66 — Hazard-detecting Instruments and Apparatus |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Radioactive Material | COBALT 60 |
| Reference Number Differentiating Characteristics | QUALITY ASSURANCE TESTED FOR SURFFACE OR SUBMARINE APPLICATION |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| A-453-1 MODEL 528QA | Naval Inventory Control Point Mechanicsburg (USA) |
| COBALT-60 50 CURIESQA | Naval Inventory Control Point Mechanicsburg (USA) |
| A-424-8 MODEL 576QA | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| A-424-8 MODEL 576 | 5/1 Secondary reference Qsa Global Inc |
| COBALT-60 50 CURIES | 3/1 Design control — primary reference Qsa Global Inc |
NSN 6665-01-376-9918 is a Radioactive Test Sample, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 6665, Hazard-detecting Instruments and Apparatus. Status: active.
NSN 6665-01-376-9918 has 3 manufacturer part numbers on file: A-453-1 MODEL 528QA (Naval Inventory Control Point Mechanicsburg), COBALT-60 50 CURIESQA (Naval Inventory Control Point Mechanicsburg), A-424-8 MODEL 576QA (Naval Inventory Control Point Mechanicsburg).
1 possible match (shared part number, not a government interchangeability claim): 6665-01-377-6268. Verify interchangeability with system specifications before substitution.
Key specifications for A-453-1 MODEL 528QA: Criticality Code Justification: ZZZY; Radioactive Material: COBALT 60; Reference Number Differentiating Characteristics: QUALITY ASSURANCE TESTED FOR SURFFACE OR SUBMARINE APPLICATION. 3 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.
NSN 6665-01-376-9918 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.