The Beam,structural, cataloged under National Stock Number 9540-00-540-6025, 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 The Boeing Company Div Defense. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9540-00-540-6025 |
| Primary Part Number | 1M558 |
| Item Name | Beam,structural |
| FSC / FSG | 9540 / 95 — No Item Name Available |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Right Side Top Flange Distance to Center of Both Flanges | 0.938 INCHES NOMINAL IN |
| Top Flange Width | 1.875 INCHES NOMINAL IN |
| Nondefinitive Spec/std Data | O TEMPER |
| Material | ALUMINUM ALLOY 7075 |
| Material Document and Classification | QQ-A-200/11 FED SPEC 1ST MATERIAL RESPONSE |
| Leg Thickness | 0.050 INCHES NOMINAL IN |
| Left Top Inside Angle | 90.0 DEGREES NOMINAL |
| Left Side Top Flange Distance to Center of Both Flanges | 0.937 INCHES NOMINAL IN |
| Right Top Inside Angle | 90.0 DEGREES NOMINAL |
| Fillet Radius Where Top Right Flange Joins Web Flange/leg | 0.094 INCHES NOMINAL IN |
| Right Side Top Flange Thickness | 0.050 INCHES NOMINAL IN |
| Heat Treatment | O-ANNEALED |
| Fillet Radius Where Top Left Flange Joins Web Flange/leg | 0.094 INCHES NOMINAL IN |
| Left Side Top Flange Thickness | 0.050 INCHES NOMINAL IN |
| Fabrication Method | EXTRUDED |
| Second Tip Relationship to First Tip | IDENTICAL |
| Weight Per Unit Measure | 0.170 POUNDS PER LINEAR FOOT LBS |
| Length | 10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT |
| Third Tip Relationship to Preceding Tips | IDENTICAL W/FIRST TIP |
| First Tip Style | SQUARE END |
| Basic Shape Style | T SHAPE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 1M558 | The Boeing Company Div Defense (USA) |
| E711111 | General Dynamics Corp Convair Div Lindbergh Field Facility (USA) |
| AMS-QQA200-11 | Society of Automotive Engineers Inc (USA) |
| QQA200-11 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
| E711111 | Tracor Flight Systems Inc Sub of Tracor Inc (USA) |
| E711111 | Hughes Missile Systems Co San Diego (USA) |
| 14784 | International Light Metals Corp Sub of Martin Marietta Corp (USA) |
| BAC1505-26360 | The Boeing Company Div Defense (USA) |
| 60-4493 | Transtar Metals Corp (USA) |
| 22899 | Aluminum Co of America (USA) |
| AMS-QQA200-11 | Sae International Dba Sae International (USA) |
NSN 9540-00-540-6025 is a Beam,structural, manufactured by The Boeing Company Div Defense, classified under FSC 9540 (No Item Name Available). Status: active.
NSN 9540-00-540-6025 has 11 cross-referenced part numbers: 1M558 (The Boeing Company Div Defense), E711111 (General Dynamics Corp Convair Div Lindbergh Field Facility), AMS-QQA200-11 (Society of Automotive Engineers Inc), QQA200-11 (Federal Specifications Promulgated by General Services Administration Washington DC), E711111 (Tracor Flight Systems Inc Sub of Tracor Inc) and 6 more.
There are 10 known substitutes for 9540-00-540-6025: 5365-00-089-3400, 9540-00-231-2912, 9540-00-287-9358 and 7 more. Verify interchangeability with system specifications before substitution.
Key specifications for 1M558: Right Side Top Flange Distance to Center of Both Flanges: 0.938 INCHES NOMINAL IN; Top Flange Width: 1.875 INCHES NOMINAL IN; Nondefinitive Spec/std Data: O TEMPER; Material: ALUMINUM ALLOY 7075. 22 total characteristics are documented in the Federal Logistics Information System.