The Beam,structural, cataloged under National Stock Number 9540-00-251-1776, is classified within Federal Supply Class 9540 (Structural Shapes, Nonferrous Base Metal) of the Metal Bars, Sheets, and Shapes group. Government technical data includes 27 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9540-00-251-1776 |
| Item Name | Beam,structural |
| FSC / FSG | 9540 / 95 — Structural Shapes, Nonferrous Base Metal |
| Status | ACTIVE |
| Right Top Inner Face to Outer Face Angle | 90.0 DEGREES NOMINAL |
| Third Tip Radius | 0.125 INCHES NOMINAL IN |
| Right Side Top Flange Thickness | 0.094 INCHES NOMINAL IN |
| Length | 10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT |
| Left Side Top Flange Distance to Center of Both Flanges | 0.625 INCHES NOMINAL IN |
| Third Tip Style | LEFT BULBOUS |
| Right Side Top Flange Tip Thickness | 0.077 INCHES NOMINAL IN |
| Heat Treatment | T-4 SOLUTION HEAT TREATED AND NATURAL AGED |
| Fillet Radius Where Top Right Flange Joins Web Flange/leg | 0.062 INCHES NOMINAL IN |
| First Tip Radius | 0.062 INCHES NOMINAL IN |
| Material Document and Classification | QQ-A-200/3 FED SPEC 1ST MATERIAL RESPONSE |
| Fillet Radius Where Top Left Flange Joins Web Flange/leg | 0.062 INCHES NOMINAL IN |
| Basic Shape Style | T SHAPE |
| Weight Per Unit Measure | 0.256 POUNDS PER LINEAR FOOT LBS |
| Nondefinitive Spec/std Data | 4 TEMPER |
| Third Tip Diameter | 0.250 INCHES NOMINAL IN |
| Left Top Inner Face to Outer Face Angle | 90.0 DEGREES NOMINAL |
| Top Flange Width | 1.250 INCHES NOMINAL IN |
| Left Side Top Flange Tip Thickness | 0.077 INCHES NOMINAL IN |
| Third Tip Relationship to Preceding Tips | NOT IDENTICAL |
| Material | ALUMINUM ALLOY 2024 |
| Fabrication Method | EXTRUDED |
| Leg Thickness | 0.078 INCHES NOMINAL IN |
| First Tip Style | LOWER RADIUS |
| Left Side Top Flange Thickness | 0.094 INCHES NOMINAL IN |
| Second Tip Relationship to First Tip | IDENTICAL |
| Right Side Top Flange Distance to Center of Both Flanges | 0.625 INCHES NOMINAL IN |
| 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 |
|---|---|
| QQA267 | 4/1 Identification reference U.S. Government activity |
| DIE30024 | 3/1 Design control — primary reference Aluminum Co of America |
| 4E28 | 5/1 Secondary reference The Boeing Company Div Legacy Am&m |
NSN 9540-00-251-1776 is a Beam,structural, classified under FSC 9540, Structural Shapes, Nonferrous Base Metal. Status: active.
Key specifications for 9540-00-251-1776: Right Top Inner Face to Outer Face Angle: 90.0 DEGREES NOMINAL; Third Tip Radius: 0.125 INCHES NOMINAL IN; Overall Height: 1.000 INCHES NOMINAL IN; Right Side Top Flange Thickness: 0.094 INCHES NOMINAL IN. 27 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.