PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ASTM B221Angle,structural

American Society for Testing and Materials Dba Astm International · NSN 9540-00-145-7550 · FSC 9540 · No Item Name Available
Verified by PartsTable
NSN 9540-00-145-7550 — this item is cataloged by the U.S. Government under National Stock Number 9540-00-145-7550. Primary manufacturer part number: ASTM B221.
Features
  • Angle,structural — FSC 9540
  • Material: ALUMINUM ALLOY 2024
  • Material Document and Classification: AMS-QQ-A-200/3 FED SPEC SINGLE MATERIAL RESPONSE
  • Base Flange Thickness: 0.050 INCHES NOMINAL IN
  • Fillet Radius Where Left Flange Joins Base Flange: 0.075 INCHES NOMINAL IN
  • Heat Treatment: T-4 SOLUTION HEAT TREATED
  • First Tip Style: RIGHT QUARTER RADIUS
  • Weight Per Unit Measure: 0.090 POUNDS PER LINEAR FOOT LBS
Applications
  • Applications requiring Aluminum Alloy 2024 construction
General Description

The Angle,structural, cataloged under National Stock Number 9540-00-145-7550, 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 American Society for Testing and Materials Dba Astm International. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN9540-00-145-7550
Primary Part NumberASTM B221
Item NameAngle,structural
FSC / FSG9540 / 95 — No Item Name Available
ManufacturerAmerican Society for Testing and Materials Dba Astm International
StatusACTIVE
MaterialALUMINUM ALLOY 2024
Material Document and ClassificationAMS-QQ-A-200/3 FED SPEC SINGLE MATERIAL RESPONSE
Base Flange Thickness0.050 INCHES NOMINAL IN
Fillet Radius Where Left Flange Joins Base Flange0.075 INCHES NOMINAL IN
Heat TreatmentT-4 SOLUTION HEAT TREATED
First Tip StyleRIGHT QUARTER RADIUS
Weight Per Unit Measure0.090 POUNDS PER LINEAR FOOT LBS
First Tip Radius0.050 INCHES NOMINAL IN
Second Tip Radius0.075 INCHES NOMINAL IN
Second Tip Relationship to First TipNOT IDENTICAL
Left Inside Angle90.0 DEGREES NOMINAL
Second Tip Diameter0.150 INCHES NOMINAL IN
Second Tip StyleUPPER BULBOUS
Length10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
Nondefinitive Spec/std Data2024 ALLOY AND T4 TEMPER
Basic Shape StyleANGLE
Left Side Flange Thickness0.050 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
9540-00-008-6030 INTERCHANGEABLE
Beam,structural
9540-00-017-6413 INTERCHANGEABLE
Beam,structural
9540-00-140-2399 INTERCHANGEABLE
Angle,structural
9540-00-152-2966 INTERCHANGEABLE
Channel,structural
9530-00-204-1048 INTERCHANGEABLE
Bar,metal
9530-00-224-1199 INTERCHANGEABLE
Bar,metal
9530-00-236-8439 INTERCHANGEABLE
Bar,metal
9540-00-237-9537 INTERCHANGEABLE
Angle,structural
9540-00-288-3681 INTERCHANGEABLE
Beam,structural
9540-00-554-999644444 INTERCHANGEABLE
Channel,structural
Aluminum Co of America
Cross-Reference Index
Part NumberManufacturer
ASTM B221 American Society for Testing and Materials Dba Astm International (USA)
QQ-A-200/3 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
AMS-QQ-A-200/3 Society of Automotive Engineers Inc (USA)
AMS-QQ-A-200A Society of Automotive Engineers Inc (USA)
ASTM B221-02 ALLOY 2024 TMPR T4 American Society for Testing and Materials Dba Astm International (USA)
AND10135-0601 Airforce-Navy Aeronautical Design Standard
AMS-QQ-A-200A Sae International Dba Sae International (USA)
AMS-QQ-A-200/3 Sae International Dba Sae International (USA)
Related Parts
9540-00-008-6030INTERCHANGEABLE
BEAM,STRUCTURAL
9540-00-017-6413INTERCHANGEABLE
BEAM,STRUCTURAL
9540-00-140-2399INTERCHANGEABLE
ANGLE,STRUCTURAL
9540-00-152-2966INTERCHANGEABLE
CHANNEL,STRUCTURAL
9530-00-204-1048INTERCHANGEABLE
BAR,METAL
9530-00-224-1199INTERCHANGEABLE
BAR,METAL
9530-00-236-8439INTERCHANGEABLE
BAR,METAL
9540-00-237-9537INTERCHANGEABLE
ANGLE,STRUCTURAL
9540-00-288-3681INTERCHANGEABLE
BEAM,STRUCTURAL
9540-00-554-9996INTERCHANGEABLE
CHANNEL,STRUCTURAL
44444

Frequently Asked Questions

What is NSN 9540-00-145-7550?

NSN 9540-00-145-7550 is a Angle,structural, manufactured by American Society for Testing and Materials Dba Astm International, classified under FSC 9540 (No Item Name Available). Status: active.

What are the part numbers for NSN 9540-00-145-7550?

NSN 9540-00-145-7550 has 8 cross-referenced part numbers: ASTM B221 (American Society for Testing and Materials Dba Astm International), QQ-A-200/3 (Federal Specifications Promulgated by General Services Administration Washington DC), AMS-QQ-A-200/3 (Society of Automotive Engineers Inc), AMS-QQ-A-200A (Society of Automotive Engineers Inc), ASTM B221-02 ALLOY 2024 TMPR T4 (American Society for Testing and Materials Dba Astm International) and 3 more.

What NSN replaces 9540-00-145-7550?

There are 10 known substitutes for 9540-00-145-7550: 9540-00-008-6030, 9540-00-017-6413, 9540-00-140-2399 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of ASTM B221?

Key specifications for ASTM B221: Material: ALUMINUM ALLOY 2024; Material Document and Classification: AMS-QQ-A-200/3 FED SPEC SINGLE MATERIAL RESPONSE; Base Flange Thickness: 0.050 INCHES NOMINAL IN; Fillet Radius Where Left Flange Joins Base Flange: 0.075 INCHES NOMINAL IN. 19 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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