The Angle,structural, cataloged under National Stock Number 9540-00-720-4254, is classified within Federal Supply Class 9540 (Structural Shapes, Nonferrous Base Metal) of the Metal Bars, Sheets, and Shapes group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 9540-00-720-4254 |
| Item Name | Angle,structural |
| FSC / FSG | 9540 / 95 — Structural Shapes, Nonferrous Base Metal |
| Status | ACTIVE |
| Length | 12.000 FEET NOMINAL FT |
| Base Flange Thickness | 0.063 INCHES NOMINAL IN |
| Heat Treatment | T-4 SOLUTION HEAT TREATED |
| First Tip Radius | 0.031 INCHES NOMINAL IN |
| Material Document and Classification | QQ-A-200/3 FED SPEC 1ST MATERIAL RESPONSE |
| Left Side Flange Thickness | 0.063 INCHES NOMINAL IN |
| Second Tip Radius | 0.031 INCHES NOMINAL IN |
| Basic Shape Style | ANGLE |
| Weight Per Unit Measure | 0.150 POUNDS PER LINEAR FOOT LBS |
| Fillet Radius Where Left Flange Joins Base Flange | 0.063 INCHES NOMINAL IN |
| Nondefinitive Spec/std Data | T4 TEMPER |
| Left Inside Angle | 90.0 DEGREES NOMINAL |
| Material | ALUMINUM ALLOY 2024 |
| Fabrication Method | EXTRUDED |
| First Tip Style | RIGHT QUARTER RADIUS |
| Second Tip Relationship to First Tip | NOT IDENTICAL |
| Second Tip Style | UPPER RADIUS |
| 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 |
|---|---|
| QQA200-3 | 4/1 Identification reference U.S. Government activity |
| FS10101-1208 | 5/1 Secondary reference U.S. Government activity |
| S9781 | 5/1 Secondary reference Northrop Grumman Systems Corporation |
| 27076 | 3/1 Design control — primary reference Aluminum Co of America |
| 45620 | 5/1 Secondary reference Aluminum Co of America |
NSN 9540-00-720-4254 is a Angle,structural, classified under FSC 9540, Structural Shapes, Nonferrous Base Metal. Status: active.
4 possible matches (shared part number, not a government interchangeability claim): 2530-00-853-4159, 6680-01-149-0116, 5133-01-443-6307. Verify interchangeability with system specifications before substitution.
Key specifications for 9540-00-720-4254: Overall Height: 0.750 INCHES NOMINAL IN; Length: 12.000 FEET NOMINAL FT; Base Flange Thickness: 0.063 INCHES NOMINAL IN; Heat Treatment: T-4 SOLUTION HEAT TREATED. 17 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.