The Beam,structural, cataloged under National Stock Number 9540-01-071-1354, is classified within Federal Supply Class 9540 (No Item Name Available) of the Metal Bars, Sheets, and Shapes group. The primary manufacturer of record is Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 11 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9540-01-071-1354 |
| Primary Part Number | K40A38T3511 |
| Item Name | Beam,structural |
| FSC / FSG | 9540 / 95 — No Item Name Available |
| Manufacturer | Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company |
| Status | ACTIVE |
| Fillet Radius Where Top Left Flange Joins Web Flange/leg | 0.125 INCHES NOMINAL IN |
| First Tip Style | SQUARE END |
| Right Side Top Flange Thickness | 0.072 INCHES NOMINAL IN |
| Left Side Top Flange Thickness | 0.072 INCHES NOMINAL IN |
| Second Tip Relationship to First Tip | IDENTICAL |
| Material | ALUMINUM ALLOY 2024 |
| Heat Treatment | T-3511 SOLUTION HEAT TREATED |
| Right Side Top Flange Distance to Center of Both Flanges | 1.500 INCHES NOMINAL IN |
| Left Side Top Flange Distance to Center of Both Flanges | 1.500 INCHES NOMINAL IN |
| Left Top Inside Angle | 90.0 DEGREES NOMINAL |
| Material Document and Classification | AMS-QQ-A-200/3 FED SPEC SINGLE MATERIAL RESPONSE |
| Leg Thickness | 0.072 INCHES NOMINAL IN |
| Weight Per Unit Measure | 0.479 POUNDS PER LINEAR FOOT LBS |
| Nondefinitive Spec/std Data | T3511 TEMPER |
| Specification/standard Data | 81755-K40 MANUFACTURERS STANDARD |
| Right Top Inside Angle | 90.0 DEGREES NOMINAL |
| Fabrication Method | EXTRUDED |
| Top Flange Width | 3.000 INCHES NOMINAL IN |
| Fillet Radius Where Top Right Flange Joins Web Flange/leg | 0.125 INCHES NOMINAL IN |
| Length | 10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT |
| Basic Shape Style | T SHAPE |
| Third Tip Relationship to Preceding Tips | IDENTICAL W/FIRST TIP |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| K40A38T3511 | Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company (USA) |
| QQ-A-200/3 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
| AMS-QQ-A-200/3 | Sae International Dba Sae International (USA) |
| 9540PL0905344 | Jednolity Indeks Materialowy - Uniform Material Index (POL) |
| 21939 | International Light Metals Corp Sub of Martin Marietta Corp (USA) |
| 11004-A | Pimalco Inc. Div Alcoa Inc Global Hard Alloy Extrusions (USA) |
| AMS-QQ-A-200/3 | Society of Automotive Engineers Inc (USA) |
| PA6738 | Transtar Metals Corp (USA) |
| MS14375E149 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| 72160 | Aluminum Co of America (USA) |
| 60-4021 | Transtar Metals Corp (USA) |
| H2759 | Kaiser Aluminum and Chemical Corp (USA) |
NSN 9540-01-071-1354 is a Beam,structural, manufactured by Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company, classified under FSC 9540 (No Item Name Available). Status: active.
NSN 9540-01-071-1354 has 12 cross-referenced part numbers: K40A38T3511 (Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company), QQ-A-200/3 (Federal Specifications Promulgated by General Services Administration Washington DC), AMS-QQ-A-200/3 (Sae International Dba Sae International), 9540PL0905344 (Jednolity Indeks Materialowy - Uniform Material Index), 21939 (International Light Metals Corp Sub of Martin Marietta Corp) and 7 more.
There are 12 known substitutes for 9540-01-071-1354: 1680-00-402-2546, 6625-00-567-5837, 9540-00-684-6322 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for K40A38T3511: Fillet Radius Where Top Left Flange Joins Web Flange/leg: 0.125 INCHES NOMINAL IN; First Tip Style: SQUARE END; Right Side Top Flange Thickness: 0.072 INCHES NOMINAL IN; Left Side Top Flange Thickness: 0.072 INCHES NOMINAL IN. 23 total characteristics are documented in the Federal Logistics Information System.