PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ASTM B221Angle,structural

American Society for Testing and Materials Dba Astm International · NSN 9540-00-237-9537 · FSC 9540 · No Item Name Available
Verified by PartsTable
NSN 9540-00-237-9537 — this item is cataloged by the U.S. Government under National Stock Number 9540-00-237-9537. Primary manufacturer part number: ASTM B221.
Features
  • Angle,structural — FSC 9540
  • Length: 10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
  • Second Tip Relationship to First Tip: IDENTICAL
  • Nondefinitive Spec/std Data: 7075 ALLOY AND T6 TEMPER
  • Material: ALUMINUM ALLOY 7075
  • Heat Treatment: T-6 SOLUTION HEAT TREATED
  • Base Flange Thickness: 0.064 INCHES NOMINAL IN
  • Weight Per Unit Measure: 0.270 POUNDS PER LINEAR FOOT LBS
Applications
  • Applications requiring Aluminum Alloy 7075 construction
General Description

The Angle,structural, cataloged under National Stock Number 9540-00-237-9537, 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 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN9540-00-237-9537
Primary Part NumberASTM B221
Item NameAngle,structural
FSC / FSG9540 / 95 — No Item Name Available
ManufacturerAmerican Society for Testing and Materials Dba Astm International
StatusACTIVE
Length10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
Second Tip Relationship to First TipIDENTICAL
Nondefinitive Spec/std Data7075 ALLOY AND T6 TEMPER
MaterialALUMINUM ALLOY 7075
Heat TreatmentT-6 SOLUTION HEAT TREATED
Base Flange Thickness0.064 INCHES NOMINAL IN
Weight Per Unit Measure0.270 POUNDS PER LINEAR FOOT LBS
Basic Shape StyleANGLE
Fillet Radius Where Left Flange Joins Base Flange0.125 INCHES NOMINAL IN
Left Side Flange Thickness0.064 INCHES NOMINAL IN
Left Inside Angle90.0 DEGREES NOMINAL
Fabrication MethodEXTRUDED
First Tip StyleSQUARE END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
9540-00-008-6030 INTERCHANGEABLE
Beam,structural
9540-00-017-6413 INTERCHANGEABLE
Beam,structural
9540-00-140-2399 INTERCHANGEABLE
Angle,structural
9540-00-145-7550 INTERCHANGEABLE
Angle,structural
9540-00-149-6344 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
9540-00-288-3681 INTERCHANGEABLE
Beam,structural
Cross-Reference Index
Part NumberManufacturer
ASTM B221 American Society for Testing and Materials Dba Astm International (USA)
AMS-QQ-A-200A Sae International Dba Sae International (USA)
AMS-STD-184 Society of Automotive Engineers Inc (USA)
AMS-QQ-A-200A Society of Automotive Engineers Inc (USA)
QQ-A-200/11 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
AMS4154 Sae International Dba Sae International (USA)
AMS-QQ-A-200/11 Sae International Dba Sae International (USA)
22637 Aluminum Co of America (USA)
AMS-QQ-A-200/11 Society of Automotive Engineers Inc (USA)
13684 International Light Metals Corp Sub of Martin Marietta Corp (USA)
Related Parts
9540-00-008-6030INTERCHANGEABLE
BEAM,STRUCTURAL
9540-00-017-6413INTERCHANGEABLE
BEAM,STRUCTURAL
9540-00-140-2399INTERCHANGEABLE
ANGLE,STRUCTURAL
9540-00-145-7550INTERCHANGEABLE
ANGLE,STRUCTURAL
9540-00-149-6344INTERCHANGEABLE
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
9540-00-288-3681INTERCHANGEABLE
BEAM,STRUCTURAL
5342-00-338-0849INTERCHANGEABLE
LATCH
13684
6625-00-387-6059INTERCHANGEABLE
TEST SET SUBASSEMBLY,ELECTRICAL
354A6050

Frequently Asked Questions

What is NSN 9540-00-237-9537?

NSN 9540-00-237-9537 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 9540-00-237-9537?

NSN 9540-00-237-9537 has 10 cross-referenced part numbers: ASTM B221 (American Society for Testing and Materials Dba Astm International), AMS-QQ-A-200A (Sae International Dba Sae International), AMS-STD-184 (Society of Automotive Engineers Inc), AMS-QQ-A-200A (Society of Automotive Engineers Inc), QQ-A-200/11 (Federal Specifications Promulgated by General Services Administration Washington DC) and 5 more.

What NSN replaces 9540-00-237-9537?

There are 12 known substitutes for 9540-00-237-9537: 9540-00-008-6030, 9540-00-017-6413, 9540-00-140-2399 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of ASTM B221?

Key specifications for ASTM B221: Overall Width: 2.000 INCHES NOMINAL IN; Length: 10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT; Second Tip Relationship to First Tip: IDENTICAL; Nondefinitive Spec/std Data: 7075 ALLOY AND T6 TEMPER. 15 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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