The Core Material,cellular,structura, cataloged under National Stock Number 5680-01-309-5779, is classified within Federal Supply Class 5680 (Miscellaneous Construction Materials) of the Construction and Building Materials group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5680-01-309-5779 |
| Item Name | Core Material,cellular,structura |
| FSC / FSG | 5680 / 56 — Miscellaneous Construction Materials |
| Status | ACTIVE |
| Cell Size | 0.250 IN. IN |
| Cell Depth | 0.425 INCHES NOMINAL IN |
| Specification/standard Data | 81349-MIL-C-8073 GOVERNMENT SPECIFICATION |
| Nondefinitive Spec/std Data | 1 CLASS AND 2A TYPE A |
| Maximum Service Temp Limit | 350.0 DEG FAHRENHEIT |
| Material | GLASS BASIC |
| Cell Condition | EXPANDED |
| 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 |
|---|---|
| MIL-C-8073 | 4/1 Identification reference U.S. Government activity |
NSN 5680-01-309-5779 is a Core Material,cellular,structura, classified under FSC 5680, Miscellaneous Construction Materials. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5680-01-309-5780. Verify interchangeability with system specifications before substitution.
Key specifications for 5680-01-309-5779: Cell Size: 0.250 IN. IN; Cell Depth: 0.425 INCHES NOMINAL IN; Specification/standard Data: 81349-MIL-C-8073 GOVERNMENT SPECIFICATION; Nondefinitive Spec/std Data: 1 CLASS AND 2A TYPE A. 7 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.