PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ASTM B221Angle,structural

American Society for Testing and Materials Dba Astm International · NSN 9540-01-071-8849 · FSC 9540 · No Item Name Available
Verified by PartsTable
NSN 9540-01-071-8849 — this item is cataloged by the U.S. Government under National Stock Number 9540-01-071-8849. Primary manufacturer part number: ASTM B221.
Features
  • Angle,structural — FSC 9540
  • Basic Shape Style: ANGLE
  • Left Inside Angle: 90.0 DEGREES NOMINAL
  • Material: ALUMINUM ALLOY 2024
  • Left Side Flange Thickness: 0.250 INCHES NOMINAL IN
  • Base Flange Thickness: 0.250 INCHES NOMINAL IN
  • Second Tip Radius: 0.250 INCHES NOMINAL IN
  • Fillet Radius Where Left Flange Joins Base Flange: 0.250 INCHES NOMINAL IN
Applications
  • Applications requiring Aluminum Alloy 2024 construction
General Description

The Angle,structural, cataloged under National Stock Number 9540-01-071-8849, 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 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN9540-01-071-8849
Primary Part NumberASTM B221
Item NameAngle,structural
FSC / FSG9540 / 95 — No Item Name Available
ManufacturerAmerican Society for Testing and Materials Dba Astm International
StatusCANCELLED
Basic Shape StyleANGLE
Left Inside Angle90.0 DEGREES NOMINAL
MaterialALUMINUM ALLOY 2024
Left Side Flange Thickness0.250 INCHES NOMINAL IN
Base Flange Thickness0.250 INCHES NOMINAL IN
Second Tip Radius0.250 INCHES NOMINAL IN
Fillet Radius Where Left Flange Joins Base Flange0.250 INCHES NOMINAL IN
Fabrication MethodEXTRUDED
First Tip StyleRIGHT QUARTER RADIUS
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
Second Tip Relationship to First TipNOT IDENTICAL
Weight Per Unit Measure1.409 POUNDS PER LINEAR FOOT LBS
Second Tip StyleUPPER RADIUS
Heat TreatmentT-8511 SOLUTION HEAT TREATED
First Tip Radius0.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
9540-00-197-9862 INTERCHANGEABLE
Angle,structural
9540-00-542-2718 INTERCHANGEABLE
Angle,structural
9540-00-596-2815 INTERCHANGEABLE
Angle,structural
Cross-Reference Index
Part NumberManufacturer
ASTM B221 American Society for Testing and Materials Dba Astm International (USA)
AND10134-3004 Airforce-Navy Aeronautical Design Standard
K10A216T8511 Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company (USA)
AMS-QQ-A-200/3 Society of Automotive Engineers Inc (USA)
MS14284E295 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
QQ-A-200/3 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
AMS-QQ-A-200/3 Sae International Dba Sae International (USA)
10134-3004 Transtar Metals Corp (USA)
Related Parts
9540-00-197-9862INTERCHANGEABLE
ANGLE,STRUCTURAL
9540-00-542-2718INTERCHANGEABLE
ANGLE,STRUCTURAL
9540-00-596-2815INTERCHANGEABLE
ANGLE,STRUCTURAL

Frequently Asked Questions

What is NSN 9540-01-071-8849?

NSN 9540-01-071-8849 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 9540-01-071-8849?

NSN 9540-01-071-8849 has 8 cross-referenced part numbers: ASTM B221 (American Society for Testing and Materials Dba Astm International), AND10134-3004 (Airforce-Navy Aeronautical Design Standard), K10A216T8511 (Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company), AMS-QQ-A-200/3 (Society of Automotive Engineers Inc), MS14284E295 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M) and 3 more.

What NSN replaces 9540-01-071-8849?

There are 3 known substitutes for 9540-01-071-8849: 9540-00-197-9862, 9540-00-542-2718, 9540-00-596-2815. Verify interchangeability with system specifications before substitution.

What are the specifications of ASTM B221?

Key specifications for ASTM B221: Basic Shape Style: ANGLE; Overall Height: 2.000 INCHES NOMINAL IN; Left Inside Angle: 90.0 DEGREES NOMINAL; Material: ALUMINUM ALLOY 2024. 19 total characteristics are documented in the Federal Logistics Information System.

Is NSN 9540-01-071-8849 still in active supply?

NSN 9540-01-071-8849 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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