The Structural Section,special Shape, cataloged under National Stock Number 9540-00-555-8591, is classified within Federal Supply Class 9540 (Structural Shapes, Nonferrous Base Metal) of the Metal Bars, Sheets, and Shapes group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9540-00-555-8591 |
| Item Name | Structural Section,special Shape |
| FSC / FSG | 9540 / 95 — Structural Shapes, Nonferrous Base Metal |
| Status | ACTIVE |
| Length | 10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT |
| Heat Treatment | T-6 SOLUTION HEAT TREATED |
| Material Document and Classification | AMS-Q-A-200/13 FED SPEC SINGLE MATERIAL RESPONSE |
| Weight Per Unit Measure | 0.100 POUNDS PER LINEAR FOOT LBS |
| Nondefinitive Spec/std Data | T6 TEMPER |
| Material | ALUMINUM ALLOY 7178 |
| Fabrication Method | EXTRUDED |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY MATERIAL,TEMPER AND LENGTH REQUIREMENTS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 80701 | 3/1 Design control — primary reference Aluminum Co of America |
| AMS-QQ-A-200/13 | 5/9 Secondary reference U.S. Government activity |
| QQA200-13 | 5/9 Secondary reference U.S. Government activity |
| AMS-QQ-A-200/13 ALLOY7178 TMPRT6 | 5/1 Secondary reference Sae International Dba Sae International |
| AMS-QQ-A-200/13 ALLOY7178 TMPRT6 | 5/9 Secondary reference U.S. Government activity |
NSN 9540-00-555-8591 is a Structural Section,special Shape, classified under FSC 9540, Structural Shapes, Nonferrous Base Metal. Status: active.
6 possible matches (shared part number, not a government interchangeability claim): 4330-01-110-6177, 4730-01-353-0498, 3010-01-467-4135. Verify interchangeability with system specifications before substitution.
Key specifications for 9540-00-555-8591: Length: 10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT; Heat Treatment: T-6 SOLUTION HEAT TREATED; Material Document and Classification: AMS-Q-A-200/13 FED SPEC SINGLE MATERIAL RESPONSE; Weight Per Unit Measure: 0.100 POUNDS PER LINEAR FOOT LBS. 8 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.