PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ASTM B221Angle,structural

American Society for Testing and Materials Dba Astm International · NSN 9540-01-071-9593 · FSC 9540 · No Item Name Available
Verified by PartsTable
NSN 9540-01-071-9593 — this item is cataloged by the U.S. Government under National Stock Number 9540-01-071-9593. Primary manufacturer part number: ASTM B221.
Features
  • Angle,structural — FSC 9540
  • Fillet Radius Where Left Flange Joins Base Flange: 0.188 INCHES NOMINAL IN
  • Second Tip Radius: 0.094 INCHES NOMINAL IN
  • Fabrication Method: EXTRUDED
  • Material: ALUMINUM ALLOY 2024
  • First Tip Radius: 0.094 INCHES NOMINAL IN
  • Nondefinitive Spec/std Data: 2024 ALLOY AND T8511 TEMPER
  • 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 9540-01-071-9593, 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 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN9540-01-071-9593
Primary Part NumberASTM B221
Item NameAngle,structural
FSC / FSG9540 / 95 — No Item Name Available
ManufacturerAmerican Society for Testing and Materials Dba Astm International
StatusACTIVE
Fillet Radius Where Left Flange Joins Base Flange0.188 INCHES NOMINAL IN
Second Tip Radius0.094 INCHES NOMINAL IN
Fabrication MethodEXTRUDED
MaterialALUMINUM ALLOY 2024
First Tip Radius0.094 INCHES NOMINAL IN
Nondefinitive Spec/std Data2024 ALLOY AND T8511 TEMPER
Material Document and ClassificationAMS-QQ-A-200/3 FED SPEC SINGLE MATERIAL RESPONSE
Length10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
First Tip StyleRIGHT QUARTER RADIUS
Left Inside Angle90.0 DEGREES NOMINAL
Second Tip StyleUPPER RADIUS
Second Tip Relationship to First TipNOT IDENTICAL
Basic Shape StyleANGLE
Base Flange Thickness0.094 INCHES NOMINAL IN
Heat TreatmentT-8511 SOLUTION HEAT TREATED
Weight Per Unit Measure0.389 POUNDS PER LINEAR FOOT LBS
Left Side Flange Thickness0.094 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
9540-01-176-107860-9655 INTERCHANGEABLE
Angle,structural
Transtar Metals Corp
Cross-Reference Index
Part NumberManufacturer
ASTM B221 American Society for Testing and Materials Dba Astm International (USA)
MS14284E225 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
AMS-QQ-A-200/3 Sae International Dba Sae International (USA)
K10A81T8511 Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company (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)
9540PL0871869 Jednolity Indeks Materialowy - Uniform Material Index (POL)
60-9655 Transtar Metals Corp (USA)
NAS342-42 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
Related Parts
9540-01-176-1078INTERCHANGEABLE
ANGLE,STRUCTURAL
60-9655

Frequently Asked Questions

What is NSN 9540-01-071-9593?

NSN 9540-01-071-9593 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 9540-01-071-9593?

NSN 9540-01-071-9593 has 9 cross-referenced part numbers: ASTM B221 (American Society for Testing and Materials Dba Astm International), MS14284E225 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), AMS-QQ-A-200/3 (Sae International Dba Sae International), K10A81T8511 (Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company), QQ-A-200/3 (Federal Specifications Promulgated by General Services Administration Washington DC) and 4 more.

What NSN replaces 9540-01-071-9593?

There is 1 known substitute for 9540-01-071-9593: 9540-01-176-1078. Verify interchangeability with system specifications before substitution.

What are the specifications of ASTM B221?

Key specifications for ASTM B221: Fillet Radius Where Left Flange Joins Base Flange: 0.188 INCHES NOMINAL IN; Second Tip Radius: 0.094 INCHES NOMINAL IN; Fabrication Method: EXTRUDED; Material: ALUMINUM ALLOY 2024. 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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