PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ASTM B221Angle,structural

American Society for Testing and Materials Dba Astm International · NSN 9540-00-952-7077 · FSC 9540 · No Item Name Available
Verified by PartsTable
NSN 9540-00-952-7077 — this item is cataloged by the U.S. Government under National Stock Number 9540-00-952-7077. Primary manufacturer part number: ASTM B221.
Features
  • Angle,structural — FSC 9540
  • Base Flange Thickness: 0.125 INCHES NOMINAL IN
  • Second Tip Radius: 0.062 INCHES NOMINAL IN
  • Fabrication Method: EXTRUDED
  • Material: ALUMINUM ALLOY 2024
  • Weight Per Unit Measure: 0.320 POUNDS PER LINEAR FOOT LBS
  • Left Inside Angle: 90.0 DEGREES NOMINAL
  • Material Document and Classification: AMS-QQ-A-200/3 FED SPEC SINGLE MATERIAL RESPONSE
Applications
  • Applications requiring Aluminum Alloy 2024 construction
General Description

The Angle,structural, cataloged under National Stock Number 9540-00-952-7077, 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 9 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN9540-00-952-7077
Primary Part NumberASTM B221
Item NameAngle,structural
FSC / FSG9540 / 95 — No Item Name Available
ManufacturerAmerican Society for Testing and Materials Dba Astm International
StatusCANCELLED
Base Flange Thickness0.125 INCHES NOMINAL IN
Second Tip Radius0.062 INCHES NOMINAL IN
Fabrication MethodEXTRUDED
MaterialALUMINUM ALLOY 2024
Weight Per Unit Measure0.320 POUNDS PER LINEAR FOOT LBS
Left Inside Angle90.0 DEGREES NOMINAL
Material Document and ClassificationAMS-QQ-A-200/3 FED SPEC SINGLE MATERIAL RESPONSE
First Tip Radius0.063 INCHES NOMINAL IN
Left Side Flange Thickness0.125 INCHES NOMINAL IN
Nondefinitive Spec/std Data2024 ALLOY AND T3511 TEMPER
Basic Shape StyleANGLE
Second Tip StyleUPPER RADIUS
First Tip StyleRIGHT QUARTER RADIUS
Second Tip Relationship to First TipNOT IDENTICAL
Heat TreatmentT-3511 SOLUTION HEAT TREATED
Fillet Radius Where Left Flange Joins Base Flange0.125 INCHES NOMINAL IN
Length10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
9540-00-058-1732 INTERCHANGEABLE
Angle,structural
3020-00-528-9189S-126 INTERCHANGEABLE
Sprocket Wheel
Imperial Floor Covering Inc
9540-00-892-4621 INTERCHANGEABLE
Angle,structural
9540-00-929-1820 INTERCHANGEABLE
Angle,structural
9540-01-302-8263 INTERCHANGEABLE
Angle,structural
Cross-Reference Index
Part NumberManufacturer
ASTM B221 American Society for Testing and Materials Dba Astm International (USA)
1503-2773 The Boeing Company Div Defense (USA)
QQ-A-200/3 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
734HH Aluminum Co of America (USA)
AMS-QQ-A-200/3 Sae International Dba Sae International (USA)
PA4560 Transtar Metals Corp (USA)
60-1757 Transtar Metals Corp (USA)
1320 Alcoa/reynolds Metals Company (USA)
AMS-QQ-A-200/3 Society of Automotive Engineers Inc (USA)
Related Parts
9540-00-058-1732INTERCHANGEABLE
ANGLE,STRUCTURAL
3020-00-528-9189INTERCHANGEABLE
SPROCKET WHEEL
S-126
9540-00-892-4621INTERCHANGEABLE
ANGLE,STRUCTURAL
9540-00-929-1820INTERCHANGEABLE
ANGLE,STRUCTURAL
9540-01-302-8263INTERCHANGEABLE
ANGLE,STRUCTURAL

Frequently Asked Questions

What is NSN 9540-00-952-7077?

NSN 9540-00-952-7077 is a Angle,structural, manufactured by American Society for Testing and Materials Dba Astm International, classified under FSC 9540 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 9540-00-952-7077?

NSN 9540-00-952-7077 has 9 cross-referenced part numbers: ASTM B221 (American Society for Testing and Materials Dba Astm International), 1503-2773 (The Boeing Company Div Defense), QQ-A-200/3 (Federal Specifications Promulgated by General Services Administration Washington DC), 734HH (Aluminum Co of America), AMS-QQ-A-200/3 (Sae International Dba Sae International) and 4 more.

What NSN replaces 9540-00-952-7077?

There are 5 known substitutes for 9540-00-952-7077: 9540-00-058-1732, 3020-00-528-9189, 9540-00-892-4621 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of ASTM B221?

Key specifications for ASTM B221: Base Flange Thickness: 0.125 INCHES NOMINAL IN; Second Tip Radius: 0.062 INCHES NOMINAL IN; Fabrication Method: EXTRUDED; Material: ALUMINUM ALLOY 2024. 19 total characteristics are documented in the Federal Logistics Information System.

Is NSN 9540-00-952-7077 still in active supply?

NSN 9540-00-952-7077 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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