The Beam,structural, cataloged under National Stock Number 9540-01-037-7606, is classified within Federal Supply Class 9540 (Structural Shapes, Nonferrous Base Metal) of the Metal Bars, Sheets, and Shapes group. The manufacturer of record is Alcoa/reynolds Metals Company. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9540-01-037-7606 |
| Primary Part Number | 34557 |
| Item Name | Beam,structural |
| FSC / FSG | 9540 / 95 — Structural Shapes, Nonferrous Base Metal |
| Manufacturer | Alcoa/reynolds Metals Company |
| Status | ACTIVE |
| Right Side Top Flange Thickness | 0.140 INCHES NOMINAL IN |
| Right Side Bottom Flange Thickness | 0.150 INCHES NOMINAL IN |
| Fillet Radius Where Bottom Left Flange Joins Web Flange/leg | 0.094 INCHES NOMINAL IN |
| Left Bottom Inside Angle | 87.0 DEGREES NOMINAL |
| Left Side Top Flange Distance to Center of Both Flanges | 0.312 INCHES NOMINAL IN |
| Web Flange Thickness | 0.188 INCHES NOMINAL IN |
| Right Top Inside Angle | 90.0 DEGREES NOMINAL |
| Left Side Bottom Flange Thickness | 0.150 INCHES NOMINAL IN |
| Left Top Inside Angle | 93.0 DEGREES NOMINAL |
| Fillet Radius Where Top Right Flange Joins Web Flange/leg | 0.094 INCHES NOMINAL IN |
| Right Bottom Inside Angle | 90.0 DEGREES NOMINAL |
| Fillet Radius Where Top Left Flange Joins Web Flange/leg | 0.094 INCHES NOMINAL IN |
| Basic Shape Style | I SHAPE |
| Weight Per Unit Measure | 0.560 POUNDS PER SQUARE FOOT LBS |
| Bottom Flange Width | 1.875 INCHES NOMINAL IN |
| Right Side Bottom Flange Distance to Center of Both Flanges | 0.938 INCHES NOMINAL IN |
| Fillet Radius Where Bottom Right Flange Joins Web Flange/leg | 0.094 INCHES NOMINAL IN |
| Top Flange Width | 0.625 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY |
| Fabrication Method | EXTRUDED |
| Left Side Bottom Flange Distance to Center of Both Flanges | 0.938 INCHES NOMINAL IN |
| Left Side Top Flange Thickness | 0.140 INCHES NOMINAL IN |
| Right Side Top Flange Distance to Center of Both Flanges | 0.312 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 34557 PRIMARY | Alcoa/reynolds Metals Company (USA) |
| 65502-02112-006 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| Reference | Meaning |
|---|---|
| PA18532 | 5/9 Secondary reference Transtar Metals Corp |
NSN 9540-01-037-7606 is a Beam,structural, manufactured by Alcoa/reynolds Metals Company, classified under FSC 9540, Structural Shapes, Nonferrous Base Metal. Status: active.
NSN 9540-01-037-7606 has 2 manufacturer part numbers on file: 34557 (Alcoa/reynolds Metals Company), 65502-02112-006 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
1 possible match (shared part number, not a government interchangeability claim): 6105-01-590-3278. Verify interchangeability with system specifications before substitution.
Key specifications for 34557: Overall Height: 0.750 INCHES NOMINAL IN; Right Side Top Flange Thickness: 0.140 INCHES NOMINAL IN; Right Side Bottom Flange Thickness: 0.150 INCHES NOMINAL IN; Fillet Radius Where Bottom Left Flange Joins Web Flange/leg: 0.094 INCHES NOMINAL IN. 23 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.