The Beam,structural, cataloged under National Stock Number 9540-01-071-6545, 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 5 commercial cross-references from 5 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 | 9540-01-071-6545 |
| Primary Part Number | K40A12O |
| Item Name | Beam,structural |
| FSC / FSG | 9540 / 95 — No Item Name Available |
| Manufacturer | Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company |
| Status | ACTIVE |
| First Tip Style | SQUARE END |
| Right Top Inside Angle | 90.0 DEGREES NOMINAL |
| Left Side Top Flange Distance to Center of Both Flanges | 0.750 INCHES NOMINAL IN |
| Basic Shape Style | T SHAPE |
| Material | ALUMINUM ALLOY 2024 |
| Nondefinitive Spec/std Data | O TEMPER |
| Material Document and Classification | QQ-A-200/3 FED SPEC 1ST MATERIAL RESPONSE |
| Specification/standard Data | 81755-K40 MANUFACTURERS STANDARD |
| Weight Per Unit Measure | 0.205 POUNDS PER LINEAR FOOT LBS |
| Fillet Radius Where Top Right Flange Joins Web Flange/leg | 0.062 INCHES NOMINAL IN |
| Left Side Top Flange Thickness | 0.062 INCHES NOMINAL IN |
| Right Side Top Flange Thickness | 0.062 INCHES NOMINAL IN |
| Heat Treatment | O-ANNEALED |
| Top Flange Width | 1.500 INCHES NOMINAL IN |
| Left Top Inside Angle | 90.0 DEGREES NOMINAL |
| Length | 10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT |
| Third Tip Relationship to Preceding Tips | IDENTICAL W/FIRST TIP |
| Right Side Top Flange Distance to Center of Both Flanges | 0.750 INCHES NOMINAL IN |
| Fabrication Method | EXTRUDED |
| Fillet Radius Where Top Left Flange Joins Web Flange/leg | 0.062 INCHES NOMINAL IN |
| Second Tip Relationship to First Tip | IDENTICAL |
| Leg Thickness | 0.062 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| K40A12O | Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company (USA) |
| MS14375E025 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| QQ-A-200/3 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
| 24826 | Aluminum Co of America (USA) |
| 60-3129 | Transtar Metals Corp (USA) |
NSN 9540-01-071-6545 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 9540-01-071-6545 has 5 cross-referenced part numbers: K40A12O (Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company), MS14375E025 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), QQ-A-200/3 (Federal Specifications Promulgated by General Services Administration Washington DC), 24826 (Aluminum Co of America), 60-3129 (Transtar Metals Corp).
There are 12 known substitutes for 9540-01-071-6545: 4730-00-142-1158, 9540-00-261-5159, 4730-00-433-3192 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for K40A12O: First Tip Style: SQUARE END; Right Top Inside Angle: 90.0 DEGREES NOMINAL; Left Side Top Flange Distance to Center of Both Flanges: 0.750 INCHES NOMINAL IN; Basic Shape Style: T SHAPE. 23 total characteristics are documented in the Federal Logistics Information System.