PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

55780Beam,structural

Aluminum Co of America · NSN 9540-00-528-7072 · FSC 9540 · No Item Name Available
Verified by PartsTable
NSN 9540-00-528-7072 — this item is cataloged by the U.S. Government under National Stock Number 9540-00-528-7072. Primary manufacturer part number: 55780.
Features
  • Beam,structural — FSC 9540
  • Fillet Radius Where Top Right Flange Joins Web Flange/leg: 0.094 INCHES NOMINAL IN
  • Right Side Top Flange Distance to Center of Both Flanges: 0.880 INCHES NOMINAL IN
  • Left Top Inside Angle: 90.0 DEGREES NOMINAL
  • Material: ALUMINUM ALLOY 7075
  • Leg Thickness: 0.062 INCHES NOMINAL IN
  • Third Tip Relationship to Preceding Tips: IDENTICAL W/FIRST TIP
  • Left Side Top Flange Thickness: 0.062 INCHES NOMINAL IN
Applications
  • Applications requiring Aluminum Alloy 7075 construction
General Description

The Beam,structural, cataloged under National Stock Number 9540-00-528-7072, 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 Aluminum Co of America. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN9540-00-528-7072
Primary Part Number55780
Item NameBeam,structural
FSC / FSG9540 / 95 — No Item Name Available
ManufacturerAluminum Co of America
StatusCANCELLED
Fillet Radius Where Top Right Flange Joins Web Flange/leg0.094 INCHES NOMINAL IN
Right Side Top Flange Distance to Center of Both Flanges0.880 INCHES NOMINAL IN
Left Top Inside Angle90.0 DEGREES NOMINAL
MaterialALUMINUM ALLOY 7075
Leg Thickness0.062 INCHES NOMINAL IN
Third Tip Relationship to Preceding TipsIDENTICAL W/FIRST TIP
Left Side Top Flange Thickness0.062 INCHES NOMINAL IN
Right Top Inside Angle90.0 DEGREES NOMINAL
Second Tip Relationship to First TipIDENTICAL
Top Flange Width1.760 INCHES NOMINAL IN
Nondefinitive Spec/std DataT6 TEMPER
Material Document and ClassificationAMS-Q-A-200/11 FED SPEC SINGLE MATERIAL RESPONSE
Fillet Radius Where Top Left Flange Joins Web Flange/leg0.094 INCHES NOMINAL IN
Right Side Top Flange Thickness0.062 INCHES NOMINAL IN
Basic Shape StyleT SHAPE
Length10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
First Tip StyleSQUARE END
Left Side Top Flange Distance to Center of Both Flanges0.880 INCHES NOMINAL IN
Weight Per Unit Measure0.280 POUNDS PER LINEAR FOOT LBS
Fabrication MethodEXTRUDED
Heat TreatmentT-6 SOLUTION HEAT TREATED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5342-00-040-23648347212 INTERCHANGEABLE
Clip Assembly
U S Army Tank Automotive Command Amsta-Im-Mm
5340-00-050-1588MS9379-05 INTERCHANGEABLE
Plug,expansion
Sae International Dba Sae International
2920-00-075-743255780 INTERCHANGEABLE
Rotor,generator
Prestolite Electric Inc
5330-00-154-886919J835PC32 INTERCHANGEABLE
Seal,plain Encased
Westinghouse Electric Corp
5961-00-222-1375 INTERCHANGEABLE
Transistor
5950-00-232-514432524 INTERCHANGEABLE
Transformer,power
Freed Transformer Co
5120-00-277-1185JC904A INTERCHANGEABLE
Wrench,open End
The Stanley Works Dba Stanley Proto
5930-00-430-0074762-904 INTERCHANGEABLE
Switch Subassembly
Jaidinger Manufacturing Co Inc Dba Jaidinger Manufacturing Co Inc
9540-00-452-2478 INTERCHANGEABLE
Beam,structural
6625-00-659-692055780 INTERCHANGEABLE
Ammeter
Mitsubishi Caterpillar Forklift America, Inc
Cross-Reference Index
Part NumberManufacturer
55780 Aluminum Co of America (USA)
AMS-QQ-A-200/11 Sae International Dba Sae International (USA)
CVS32062 Triumph Aerostructures, Llc Dba Triumph Aerostructures - Vought Integrated Programs Division (USA)
32524 Alcoa/reynolds Metals Company (USA)
22571 Alcoa/reynolds Metals Company (USA)
60-6810 Transtar Metals Corp (USA)
QQA200-11 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
PA6800 Transtar Metals Corp (USA)
PA16377 Transtar Metals Corp (USA)
AMS-QQ-A-200/11 Society of Automotive Engineers Inc (USA)
Related Parts
5342-00-040-2364INTERCHANGEABLE
CLIP ASSEMBLY
8347212
5340-00-050-1588INTERCHANGEABLE
PLUG,EXPANSION
MS9379-05
2920-00-075-7432INTERCHANGEABLE
ROTOR,GENERATOR
55780
5330-00-154-8869INTERCHANGEABLE
SEAL,PLAIN ENCASED
19J835PC32
5961-00-222-1375INTERCHANGEABLE
TRANSISTOR
5950-00-232-5144INTERCHANGEABLE
TRANSFORMER,POWER
32524
5120-00-277-1185INTERCHANGEABLE
WRENCH,OPEN END
JC904A
5930-00-430-0074INTERCHANGEABLE
SWITCH SUBASSEMBLY
762-904
9540-00-452-2478INTERCHANGEABLE
BEAM,STRUCTURAL
6625-00-659-6920INTERCHANGEABLE
AMMETER
55780
4820-00-940-7941INTERCHANGEABLE
VALVE,CHECK
5998-01-137-1001INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
22571

Frequently Asked Questions

What is NSN 9540-00-528-7072?

NSN 9540-00-528-7072 is a Beam,structural, manufactured by Aluminum Co of America, classified under FSC 9540 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 9540-00-528-7072?

NSN 9540-00-528-7072 has 10 cross-referenced part numbers: 55780 (Aluminum Co of America), AMS-QQ-A-200/11 (Sae International Dba Sae International), CVS32062 (Triumph Aerostructures, Llc Dba Triumph Aerostructures - Vought Integrated Programs Division), 32524 (Alcoa/reynolds Metals Company), 22571 (Alcoa/reynolds Metals Company) and 5 more.

What NSN replaces 9540-00-528-7072?

There are 12 known substitutes for 9540-00-528-7072: 5342-00-040-2364, 5340-00-050-1588, 2920-00-075-7432 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 55780?

Key specifications for 55780: Fillet Radius Where Top Right Flange Joins Web Flange/leg: 0.094 INCHES NOMINAL IN; Right Side Top Flange Distance to Center of Both Flanges: 0.880 INCHES NOMINAL IN; Overall Height: 2.000 INCHES NOMINAL IN; Left Top Inside Angle: 90.0 DEGREES NOMINAL. 22 total characteristics are documented in the Federal Logistics Information System.

Is NSN 9540-00-528-7072 still in active supply?

NSN 9540-00-528-7072 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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