PartsTable TECHNICAL DATA SHEET
SEPTEMBER 2026Technical Data Sheet

ASTM B221Angle,structural

American Society for Testing and Materials Dba Astm International · NSN 9540-00-145-8455 · FSC 9540 · No Item Name Available
Verified by PartsTable
NSN 9540-00-145-8455 — this item is cataloged by the U.S. Government under National Stock Number 9540-00-145-8455. Primary manufacturer part number: ASTM B221.
Features
  • Angle,structural — FSC 9540
  • Length: 10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
  • Basic Shape Style: ANGLE
  • Second Tip Style: UPPER RADIUS
  • Second Tip Relationship to First Tip: NOT IDENTICAL
  • Weight Per Unit Measure: 0.680 POUNDS PER LINEAR FOOT LBS
  • Fillet Radius Where Left Flange Joins Base Flange: 0.188 INCHES NOMINAL IN
  • Second Tip Radius: 0.188 INCHES NOMINAL IN
Applications
  • Applications requiring Aluminum Alloy 7075 construction
General Description

The Angle,structural, cataloged under National Stock Number 9540-00-145-8455, 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 16 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
NSN9540-00-145-8455
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
Basic Shape StyleANGLE
Second Tip StyleUPPER RADIUS
Second Tip Relationship to First TipNOT IDENTICAL
Weight Per Unit Measure0.680 POUNDS PER LINEAR FOOT LBS
Fillet Radius Where Left Flange Joins Base Flange0.188 INCHES NOMINAL IN
Second Tip Radius0.188 INCHES NOMINAL IN
Nondefinitive Spec/std Data7075 ALLOY AND T6 TEMPER
Material Document and ClassificationAMS-Q-A-200/11 FED SPEC SINGLE MATERIAL RESPONSE
Left Inside Angle90.0 DEGREES NOMINAL
Base Flange Thickness0.188 INCHES NOMINAL IN
First Tip Radius0.188 INCHES NOMINAL IN
Heat TreatmentT-6 SOLUTION HEAT TREATED
First Tip StyleRIGHT QUARTER RADIUS
MaterialALUMINUM ALLOY 7075
Left Side Flange Thickness0.188 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
⇄ Verified Substitutes 2
9540-00-637-3262 INTERCHANGEABLE
Angle,structural
9540-01-281-7233 INTERCHANGEABLE
Angle,structural
Cross-Reference Index
Part NumberManufacturer
ASTM B221 American Society for Testing and Materials Dba Astm International (USA)
QQ-A-200/11 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
AND10134-2005 Airforce-Navy Aeronautical Design Standard
AMS-QQ-A-200/11 Society of Automotive Engineers Inc (USA)
AMS-QQ-A-200/11 Sae International Dba Sae International (USA)
Related Parts
9540-00-637-3262INTERCHANGEABLE
ANGLE,STRUCTURAL
9540-01-281-7233INTERCHANGEABLE
ANGLE,STRUCTURAL

Frequently Asked Questions

What is NSN 9540-00-145-8455?

NSN 9540-00-145-8455 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 9540-00-145-8455?

NSN 9540-00-145-8455 has 5 cross-referenced part numbers: ASTM B221 (American Society for Testing and Materials Dba Astm International), QQ-A-200/11 (Federal Specifications Promulgated by General Services Administration Washington DC), AND10134-2005 (Airforce-Navy Aeronautical Design Standard), AMS-QQ-A-200/11 (Society of Automotive Engineers Inc), AMS-QQ-A-200/11 (Sae International Dba Sae International).

What NSN replaces 9540-00-145-8455?

There are 2 known substitutes for 9540-00-145-8455: 9540-00-637-3262, 9540-01-281-7233. Verify interchangeability with system specifications before substitution.

What are the specifications of ASTM B221?

Key specifications for ASTM B221: Length: 10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT; Overall Width: 2.000 INCHES NOMINAL IN; Basic Shape Style: ANGLE; Second Tip Style: UPPER RADIUS. 18 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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