PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

66090Beam,structural

Aluminum Co of America · NSN 9540-00-529-9342 · FSC 9540 · No Item Name Available
Verified by PartsTable
NSN 9540-00-529-9342 — this item is cataloged by the U.S. Government under National Stock Number 9540-00-529-9342. Primary manufacturer part number: 66090.
Features
  • Beam,structural — FSC 9540
  • Left Side Top Flange Distance to Center of Both Flanges: 1.282 INCHES NOMINAL IN
  • Right Side Top Flange Thickness: 0.063 INCHES NOMINAL IN
  • Material: ALUMINUM ALLOY 2024
  • Weight Per Unit Measure: 0.430 POUNDS PER LINEAR FOOT LBS
  • Second Tip Relationship to First Tip: IDENTICAL
  • Length: 10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
  • Right Top Inside Angle: 90.0 DEGREES NOMINAL
Applications
  • Applications requiring Aluminum Alloy 2024 construction
General Description

The Beam,structural, cataloged under National Stock Number 9540-00-529-9342, 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 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN9540-00-529-9342
Primary Part Number66090
Item NameBeam,structural
FSC / FSG9540 / 95 — No Item Name Available
ManufacturerAluminum Co of America
StatusACTIVE
Left Side Top Flange Distance to Center of Both Flanges1.282 INCHES NOMINAL IN
Right Side Top Flange Thickness0.063 INCHES NOMINAL IN
MaterialALUMINUM ALLOY 2024
Weight Per Unit Measure0.430 POUNDS PER LINEAR FOOT LBS
Second Tip Relationship to First TipIDENTICAL
Length10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
Right Top Inside Angle90.0 DEGREES NOMINAL
Left Top Inside Angle90.0 DEGREES NOMINAL
Top Flange Width3.200 INCHES NOMINAL IN
Left Side Top Flange Thickness0.063 INCHES NOMINAL IN
Material Document and ClassificationAMS-QQ-A-200/3 FED SPEC SINGLE MATERIAL RESPONSE
Nondefinitive Spec/std DataT4 TEMPER
Fabrication MethodEXTRUDED
Right Side Top Flange Distance to Center of Both Flanges1.918 INCHES NOMINAL IN
Heat TreatmentT-4 SOLUTION HEAT TREATED
Third Tip Relationship to Preceding TipsIDENTICAL W/FIRST TIP
Basic Shape StyleT SHAPE
Leg Thickness0.063 INCHES NOMINAL IN
Fillet Radius Where Top Right Flange Joins Web Flange/leg0.125 INCHES NOMINAL IN
First Tip StyleSQUARE END
Fillet Radius Where Top Left Flange Joins Web Flange/leg0.125 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
9540-00-402-0410 INTERCHANGEABLE
Beam,structural
2835-00-596-6476710312 INTERCHANGEABLE
Lead Assembly
Unison Industries Llc
5950-00-934-280766090 INTERCHANGEABLE
Transformer,power
Power Paragon Inc Dba Air Borne Power Div Airborne Power
5325-01-238-282766090 INTERCHANGEABLE
Ring,retaining
Dressta North America Ltd
5120-01-399-5612 INTERCHANGEABLE
Screwdriver,flat Tip
3455-01-647-026566090 INTERCHANGEABLE
Cutter,milling,woodruff Keyseat
Keo Cutters Div of Masco Corp
Cross-Reference Index
Part NumberManufacturer
66090 Aluminum Co of America (USA)
AMS-QQ-A-200/3 Sae International Dba Sae International (USA)
QQA200-3 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
AMS-QQ-A-200/3 Society of Automotive Engineers Inc (USA)
Related Parts
9540-00-402-0410INTERCHANGEABLE
BEAM,STRUCTURAL
2835-00-596-6476INTERCHANGEABLE
LEAD ASSEMBLY
710312
5950-00-934-2807INTERCHANGEABLE
TRANSFORMER,POWER
66090
5325-01-238-2827INTERCHANGEABLE
RING,RETAINING
66090
5120-01-399-5612INTERCHANGEABLE
SCREWDRIVER,FLAT TIP
3455-01-647-0265INTERCHANGEABLE
CUTTER,MILLING,WOODRUFF KEYSEAT
66090

Frequently Asked Questions

What is NSN 9540-00-529-9342?

NSN 9540-00-529-9342 is a Beam,structural, manufactured by Aluminum Co of America, classified under FSC 9540 (No Item Name Available). Status: active.

What are the part numbers for NSN 9540-00-529-9342?

NSN 9540-00-529-9342 has 4 cross-referenced part numbers: 66090 (Aluminum Co of America), AMS-QQ-A-200/3 (Sae International Dba Sae International), QQA200-3 (Federal Specifications Promulgated by General Services Administration Washington DC), AMS-QQ-A-200/3 (Society of Automotive Engineers Inc).

What NSN replaces 9540-00-529-9342?

There are 6 known substitutes for 9540-00-529-9342: 9540-00-402-0410, 2835-00-596-6476, 5950-00-934-2807 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 66090?

Key specifications for 66090: Left Side Top Flange Distance to Center of Both Flanges: 1.282 INCHES NOMINAL IN; Right Side Top Flange Thickness: 0.063 INCHES NOMINAL IN; Material: ALUMINUM ALLOY 2024; Weight Per Unit Measure: 0.430 POUNDS PER LINEAR FOOT LBS. 22 total characteristics are documented in the Federal Logistics Information System.

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