The Beam,structural, cataloged under National Stock Number 9540-00-400-8674, is classified within Federal Supply Class 9540 (Structural Shapes, Nonferrous Base Metal) of the Metal Bars, Sheets, and Shapes group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9540-00-400-8674 |
| Item Name | Beam,structural |
| FSC / FSG | 9540 / 95 — Structural Shapes, Nonferrous Base Metal |
| Status | ACTIVE |
| Right Side Bottom Flange Thickness | 0.046 INCHES NOMINAL IN |
| Length | 10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT |
| Web Flange Thickness | 0.040 INCHES NOMINAL IN |
| Left Top Inside Angle | 90.0 DEGREES NOMINAL |
| Heat Treatment | T-6511 SOLUTION HEAT TREATED |
| First Tip Radius | 0.020 INCHES NOMINAL IN |
| Material Document and Classification | AMS-Q-A-200/13 FED SPEC SINGLE MATERIAL RESPONSE |
| Right Bottom Inside Angle | 90.0 DEGREES NOMINAL |
| Fillet Radius Where Top Left Flange Joins Web Flange/leg | 0.062 INCHES NOMINAL IN |
| Basic Shape Style | Z SHAPE |
| Weight Per Unit Measure | 0.100 POUNDS PER LINEAR FOOT LBS |
| Nondefinitive Spec/std Data | T6511 TEMPER |
| Bottom Flange Width | 0.675 INCHES NOMINAL IN |
| Fillet Radius Where Bottom Right Flange Joins Web Flange/leg | 0.062 INCHES NOMINAL IN |
| Top Flange Width | 0.375 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 7178 |
| Fabrication Method | EXTRUDED |
| First Tip Style | LOWER RADIUS |
| Left Side Top Flange Thickness | 0.040 INCHES NOMINAL IN |
| Second Tip Relationship to First Tip | IDENTICAL |
| 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 |
|---|---|
| 81616 | 3/1 Design control — primary reference Aluminum Co of America |
| AMS-QQ-A-200/13 | 5/9 Secondary reference U.S. Government activity |
| PA18735 | 5/9 Secondary reference Transtar Metals Corp |
| QQ-A-200/13 | 5/9 Secondary reference U.S. Government activity |
| 1M461 | 5/9 Secondary reference The Boeing Company Div Defense |
| 81616 | 5/9 Secondary reference Aluminum Co of America Vernon Works Div |
| 60-5011 | 3/1 Design control — primary reference Transtar Metals Corp |
| AMS-QQ-A-200/13 | 3/1 Design control — primary reference Sae International Dba Sae International |
NSN 9540-00-400-8674 is a Beam,structural, classified under FSC 9540, Structural Shapes, Nonferrous Base Metal. Status: active.
5 possible matches (shared part number, not a government interchangeability claim): 7690-00-530-7101, 5120-01-428-8032, 6220-01-497-6877. Verify interchangeability with system specifications before substitution.
Key specifications for 9540-00-400-8674: Overall Height: 1.000 INCHES NOMINAL IN; Right Side Bottom Flange Thickness: 0.046 INCHES NOMINAL IN; Length: 10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT; Web Flange Thickness: 0.040 INCHES NOMINAL IN. 20 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.