The Beam,structural, cataloged under National Stock Number 9540-01-299-7740, is classified within Federal Supply Class 9540 (Structural Shapes, Nonferrous Base Metal) of the Metal Bars, Sheets, and Shapes group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9540-01-299-7740 |
| Item Name | Beam,structural |
| FSC / FSG | 9540 / 95 — Structural Shapes, Nonferrous Base Metal |
| Status | ACTIVE |
| Right Side Bottom Flange Thickness | 0.078 INCHES NOMINAL IN |
| Length | 10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT |
| Web Flange Thickness | 0.078 INCHES NOMINAL IN |
| Left Top Inside Angle | 90.0 DEGREES NOMINAL |
| Heat Treatment | T-81 SOLUTION HEAT TREATED |
| First Tip Radius | 0.078 INCHES NOMINAL IN |
| Material Document and Classification | QQ-A-200/3 FED SPEC 1ST MATERIAL RESPONSE |
| Right Bottom Inside Angle | 90.0 DEGREES NOMINAL |
| Fillet Radius Where Top Left Flange Joins Web Flange/leg | 0.125 INCHES NOMINAL IN |
| Second Tip Radius | 0.078 INCHES NOMINAL IN |
| Basic Shape Style | Z SHAPE |
| Nondefinitive Spec/std Data | T81 TEMPER |
| Bottom Flange Width | 1.000 INCHES NOMINAL IN |
| Fillet Radius Where Bottom Right Flange Joins Web Flange/leg | 0.125 INCHES NOMINAL IN |
| Top Flange Width | 1.000 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 2024 |
| Fabrication Method | EXTRUDED |
| First Tip Style | LOWER RADIUS |
| Left Side Top Flange Thickness | 0.078 INCHES NOMINAL IN |
| 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 |
|---|---|
| AND10138-1602 | 4/1 Identification reference U.S. Government activity |
| AMS-QQ-A-200/3 | 3/1 Design control — primary reference Sae International Dba Sae International |
| AMS-QQ-A-200/3 | 5/9 Secondary reference U.S. Government activity |
| QQ-A-200/3 | 5/9 Secondary reference U.S. Government activity |
NSN 9540-01-299-7740 is a Beam,structural, classified under FSC 9540, Structural Shapes, Nonferrous Base Metal. Status: active.
Key specifications for 9540-01-299-7740: Overall Height: 1.750 INCHES NOMINAL IN; Right Side Bottom Flange Thickness: 0.078 INCHES NOMINAL IN; Length: 10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT; Web Flange Thickness: 0.078 INCHES NOMINAL IN. 21 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.