PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ASTM B221Angle,structural

American Society for Testing and Materials Dba Astm International · NSN 9540-00-027-9204 · FSC 9540 · No Item Name Available
Verified by PartsTable
NSN 9540-00-027-9204 — this item is cataloged by the U.S. Government under National Stock Number 9540-00-027-9204. Primary manufacturer part number: ASTM B221.
Features
  • Angle,structural — FSC 9540
  • Base Flange Thickness: 0.040 INCHES NOMINAL IN
  • Basic Shape Style: ANGLE
  • Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY EXTRA LONG REFERENCE NUMBER
  • Weight Per Unit Measure: 0.050 POUNDS PER LINEAR FOOT LBS
  • Fillet Radius Where Left Flange Joins Base Flange: 0.040 INCHES NOMINAL IN
  • Material Document and Classification: AMS-QQ-A-200/3 FED SPEC SINGLE MATERIAL RESPONSE
  • Left Side Flange Thickness: 0.040 INCHES NOMINAL IN
Applications
  • Applications requiring Aluminum Alloy 2024 construction
General Description

The Angle,structural, cataloged under National Stock Number 9540-00-027-9204, 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 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN9540-00-027-9204
Primary Part NumberASTM B221
Item NameAngle,structural
FSC / FSG9540 / 95 — No Item Name Available
ManufacturerAmerican Society for Testing and Materials Dba Astm International
StatusACTIVE
Base Flange Thickness0.040 INCHES NOMINAL IN
Basic Shape StyleANGLE
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED BY EXTRA LONG REFERENCE NUMBER
Weight Per Unit Measure0.050 POUNDS PER LINEAR FOOT LBS
Fillet Radius Where Left Flange Joins Base Flange0.040 INCHES NOMINAL IN
Material Document and ClassificationAMS-QQ-A-200/3 FED SPEC SINGLE MATERIAL RESPONSE
Left Side Flange Thickness0.040 INCHES NOMINAL IN
MaterialALUMINUM ALLOY 2024
Left Inside Angle90.0 DEGREES NOMINAL
Second Tip Relationship to First TipIDENTICAL
Heat TreatmentT-4 SOLUTION HEAT TREATED
Length10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
First Tip StyleSQUARE END
Nondefinitive Spec/std Data2024 ALLOY AND T4 TEMPER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
9540-00-119-2173123482 INTERCHANGEABLE
Angle,structural
Aluminum Co of America
9540-00-152-2966 INTERCHANGEABLE
Channel,structural
9540-00-221-0544 INTERCHANGEABLE
Structural Section,special Shape
2530-00-289-72625700033 INTERCHANGEABLE
Brake Lining Kit
U S Army Tank Automotive Command Amsta-Im-Mm
9540-00-529-8798 INTERCHANGEABLE
Angle,structural
4720-01-140-4633 INTERCHANGEABLE
Hose Assembly,nonmetallic
7610-01-671-728776678 INTERCHANGEABLE
Manual,technical
Aerovironment, Inc. Dba Aerovironment Inc
Cross-Reference Index
Part NumberManufacturer
ASTM B221 American Society for Testing and Materials Dba Astm International (USA)
AMS-QQ-A-200/3 ALLOY 2024 TMPR - Sae International Dba Sae International (USA)
76678 Aluminum Co of America (USA)
AMS-STD-184 Sae International Dba Sae International (USA)
AMS-QQ-A-200/3 Society of Automotive Engineers Inc (USA)
PA5523 Transtar Metals Corp (USA)
60-5380 Transtar Metals Corp (USA)
LS4739 Lockheed Martin Corp (USA)
AMS-STD-184 Society of Automotive Engineers Inc (USA)
Related Parts
9540-00-119-2173INTERCHANGEABLE
ANGLE,STRUCTURAL
123482
9540-00-152-2966INTERCHANGEABLE
CHANNEL,STRUCTURAL
9540-00-221-0544INTERCHANGEABLE
STRUCTURAL SECTION,SPECIAL SHAPE
2530-00-289-7262INTERCHANGEABLE
BRAKE LINING KIT
5700033
9540-00-529-8798INTERCHANGEABLE
ANGLE,STRUCTURAL
4720-01-140-4633INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
7610-01-671-7287INTERCHANGEABLE
MANUAL,TECHNICAL
76678

Frequently Asked Questions

What is NSN 9540-00-027-9204?

NSN 9540-00-027-9204 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 9540-00-027-9204?

NSN 9540-00-027-9204 has 9 cross-referenced part numbers: ASTM B221 (American Society for Testing and Materials Dba Astm International), AMS-QQ-A-200/3 ALLOY 2024 TMPR - (Sae International Dba Sae International), 76678 (Aluminum Co of America), AMS-STD-184 (Sae International Dba Sae International), AMS-QQ-A-200/3 (Society of Automotive Engineers Inc) and 4 more.

What NSN replaces 9540-00-027-9204?

There are 7 known substitutes for 9540-00-027-9204: 9540-00-119-2173, 9540-00-152-2966, 9540-00-221-0544 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of ASTM B221?

Key specifications for ASTM B221: Overall Height: 0.540 INCHES NOMINAL IN; Base Flange Thickness: 0.040 INCHES NOMINAL IN; Basic Shape Style: ANGLE; Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY EXTRA LONG REFERENCE NUMBER. 16 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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