PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ASTM B221Angle,structural

American Society for Testing and Materials Dba Astm International · NSN 9540-00-542-2698 · FSC 9540 · No Item Name Available
Verified by PartsTable
NSN 9540-00-542-2698 — this item is cataloged by the U.S. Government under National Stock Number 9540-00-542-2698. Primary manufacturer part number: ASTM B221.
Features
  • Angle,structural — FSC 9540
  • Fillet Radius Where Left Flange Joins Base Flange: 0.188 INCHES NOMINAL IN
  • Weight Per Unit Measure: 0.700 POUNDS PER LINEAR FOOT LBS
  • Left Inside Angle: 90.0 DEGREES NOMINAL
  • Material: ALUMINUM ALLOY 5086
  • Second Tip Radius: 0.125 INCHES NOMINAL IN
  • Fabrication Method: EXTRUDED
  • Second Tip Style: UPPER RADIUS
Applications
  • Applications requiring Aluminum Alloy 5086 construction
General Description

The Angle,structural, cataloged under National Stock Number 9540-00-542-2698, 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 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN9540-00-542-2698
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
Weight Per Unit Measure0.700 POUNDS PER LINEAR FOOT LBS
Left Inside Angle90.0 DEGREES NOMINAL
MaterialALUMINUM ALLOY 5086
Second Tip Radius0.125 INCHES NOMINAL IN
Fabrication MethodEXTRUDED
Second Tip StyleUPPER RADIUS
Heat TreatmentH-111 STRAIN HARDENED
Second Tip Relationship to First TipNOT IDENTICAL
Nondefinitive Spec/std Data5086 ALLOY AND H111 TEMPER
Material Document and ClassificationAMS-QQ-A-200/5 FED SPEC SINGLE MATERIAL RESPONSE
First Tip StyleRIGHT QUARTER RADIUS
Basic Shape StyleANGLE
Base Flange Thickness0.250 INCHES NOMINAL IN
Left Side Flange Thickness0.250 INCHES NOMINAL IN
First Tip Radius0.125 INCHES NOMINAL IN
Length20.000 FEET MINIMUM AND 30.000 FEET MAXIMUM FT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
9540-00-147-6274 INTERCHANGEABLE
Angle,structural
4820-01-499-5988453036R2 INTERCHANGEABLE
Valve,safety Relief
Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions
Cross-Reference Index
Part NumberManufacturer
ASTM B221 American Society for Testing and Materials Dba Astm International (USA)
77C Aluminum Co of America (USA)
AMS-QQ-A-200/5 Sae International Dba Sae International (USA)
AMS-QQ-A-200/5 Society of Automotive Engineers Inc (USA)
QQ-A-200/5 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
9540-00-147-6274INTERCHANGEABLE
ANGLE,STRUCTURAL
4820-01-499-5988INTERCHANGEABLE
VALVE,SAFETY RELIEF
453036R2

Frequently Asked Questions

What is NSN 9540-00-542-2698?

NSN 9540-00-542-2698 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 9540-00-542-2698?

NSN 9540-00-542-2698 has 5 cross-referenced part numbers: ASTM B221 (American Society for Testing and Materials Dba Astm International), 77C (Aluminum Co of America), AMS-QQ-A-200/5 (Sae International Dba Sae International), AMS-QQ-A-200/5 (Society of Automotive Engineers Inc), QQ-A-200/5 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 9540-00-542-2698?

There are 2 known substitutes for 9540-00-542-2698: 9540-00-147-6274, 4820-01-499-5988. 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; Weight Per Unit Measure: 0.700 POUNDS PER LINEAR FOOT LBS; Left Inside Angle: 90.0 DEGREES NOMINAL; Material: ALUMINUM ALLOY 5086. 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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