The Beam,structural, cataloged under National Stock Number 9540-00-542-2748, 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 Howmet Corporation Dba Alcoa Howmet, Whitehall, Casting Operations. Government technical data includes 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 9 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 | 9540-00-542-2748 |
| Primary Part Number | T3953 |
| Item Name | Beam,structural |
| FSC / FSG | 9540 / 95 — No Item Name Available |
| Manufacturer | Howmet Corporation Dba Alcoa Howmet, Whitehall, Casting Operations |
| Status | ACTIVE |
| Left Bottom Inner Face to Outer Face Angle | 90.0 DEGREES NOMINAL |
| Right Top Inner Face to Outer Face Angle | 90.0 DEGREES NOMINAL |
| Left Side Top Flange Distance to Center of Both Flanges | 1.330 INCHES NOMINAL IN |
| Weight Per Unit Measure | 2.644 POUNDS PER LINEAR FOOT LBS |
| Fourth Tip Relationship to Preceding Tips | IDENTICAL W/THIRD TIP |
| Fabrication Method | EXTRUDED |
| Material | ALUMINUM ALLOY 5086 |
| Material Document and Classification | QQ-A-200/5 FED SPEC 1ST MATERIAL RESPONSE |
| Nondefinitive Spec/std Data | H-111 TEMPER |
| Third Tip Style | UPPER RADIUS |
| Fillet Radius Where Bottom Right Flange Joins Web Flange/leg | 0.290 INCHES NOMINAL IN |
| Web Flange Thickness | 0.190 INCHES NOMINAL IN |
| Top Flange Width | 2.660 INCHES NOMINAL IN |
| Third Tip Radius | 0.110 INCHES NOMINAL IN |
| Left Side Bottom Flange Tip Thickness | 0.190 INCHES NOMINAL IN |
| First Tip Style | LOWER RADIUS |
| Right Bottom Inner Face to Outer Face Angle | 90.0 DEGREES NOMINAL |
| Left Side Bottom Flange Distance to Center of Both Flanges | 1.330 INCHES NOMINAL IN |
| Second Tip Relationship to First Tip | IDENTICAL |
| Right Side Top Flange Tip Thickness | 0.190 INCHES NOMINAL IN |
| Left Top Inner Face to Outer Face Angle | 90.0 DEGREES NOMINAL |
| Heat Treatment | H-111 STRAIN HARDENED |
| Left Side Top Flange Tip Thickness | 0.190 INCHES NOMINAL IN |
| Right Side Top Flange Distance to Center of Both Flanges | 1.330 INCHES NOMINAL IN |
| Right Side Top Flange Thickness | 0.394 INCHES NOMINAL IN |
| Right Side Bottom Flange Tip Thickness | 0.190 INCHES NOMINAL IN |
| Third Tip Relationship to Preceding Tips | NOT IDENTICAL |
| First Tip Radius | 0.110 INCHES NOMINAL IN |
| Fillet Radius Where Bottom Left Flange Joins Web Flange/leg | 0.290 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| T3953 | Howmet Corporation Dba Alcoa Howmet, Whitehall, Casting Operations (USA) |
| 851B | Aluminum Co of America (USA) |
| 60-2621 | Transtar Metals Corp (USA) |
| QQ-A-200/5 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
| 2655 | Alcoa/reynolds Metals Company (USA) |
| AMS-QQ-A-200/5 | Sae International Dba Sae International (USA) |
| 30025 | International Light Metals Corp Sub of Martin Marietta Corp (USA) |
| HI-1 | Kaiser Aluminum and Chemical Corp (USA) |
| AMS-QQ-A-200/5 | Society of Automotive Engineers Inc (USA) |
NSN 9540-00-542-2748 is a Beam,structural, manufactured by Howmet Corporation Dba Alcoa Howmet, Whitehall, Casting Operations, classified under FSC 9540 (No Item Name Available). Status: active.
NSN 9540-00-542-2748 has 9 cross-referenced part numbers: T3953 (Howmet Corporation Dba Alcoa Howmet, Whitehall, Casting Operations), 851B (Aluminum Co of America), 60-2621 (Transtar Metals Corp), QQ-A-200/5 (Federal Specifications Promulgated by General Services Administration Washington DC), 2655 (Alcoa/reynolds Metals Company) and 4 more.
There are 12 known substitutes for 9540-00-542-2748: 5970-00-078-5977, 5330-00-199-5928, 9540-00-250-3604 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for T3953: Left Bottom Inner Face to Outer Face Angle: 90.0 DEGREES NOMINAL; Right Top Inner Face to Outer Face Angle: 90.0 DEGREES NOMINAL; Left Side Top Flange Distance to Center of Both Flanges: 1.330 INCHES NOMINAL IN; Weight Per Unit Measure: 2.644 POUNDS PER LINEAR FOOT LBS. 30 total characteristics are documented in the Federal Logistics Information System.