PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ASTM B221Angle,structural

American Society for Testing and Materials Dba Astm International · NSN 9540-00-227-8908 · FSC 9540 · No Item Name Available
Verified by PartsTable
NSN 9540-00-227-8908 — this item is cataloged by the U.S. Government under National Stock Number 9540-00-227-8908. Primary manufacturer part number: ASTM B221.
Features
  • Angle,structural — FSC 9540
  • Left Outside Angle: 90.0 DEGREES NOMINAL
  • Fillet Radius Where Left Flange Joins Base Flange: 0.094 INCHES NOMINAL IN
  • Material: ALUMINUM ALLOY 2024
  • Base Flange Thickness: 0.051 INCHES NOMINAL IN
  • Weight Per Unit Measure: 0.110 POUNDS PER LINEAR FOOT LBS
  • Left Side Flange Thickness: 0.051 INCHES NOMINAL IN
  • Toe Overall Height: 0.067 INCHES NOMINAL IN
Applications
  • Applications requiring Aluminum Alloy 2024 construction
General Description

The Angle,structural, cataloged under National Stock Number 9540-00-227-8908, 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 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 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
NSN9540-00-227-8908
Primary Part NumberASTM B221
Item NameAngle,structural
FSC / FSG9540 / 95 — No Item Name Available
ManufacturerAmerican Society for Testing and Materials Dba Astm International
StatusACTIVE
Left Outside Angle90.0 DEGREES NOMINAL
Fillet Radius Where Left Flange Joins Base Flange0.094 INCHES NOMINAL IN
MaterialALUMINUM ALLOY 2024
Base Flange Thickness0.051 INCHES NOMINAL IN
Weight Per Unit Measure0.110 POUNDS PER LINEAR FOOT LBS
Left Side Flange Thickness0.051 INCHES NOMINAL IN
Toe Overall Height0.067 INCHES NOMINAL IN
Flange Outer Face to Bottom Flange Centerline Distance0.250 INCHES NOMINAL IN
Second Tip StyleSQUARE END
Second Tip Relationship to First TipNOT IDENTICAL
First Tip StyleRIGHT BULBOUS
Heat TreatmentT-3511 SOLUTION HEAT TREATED
Nondefinitive Spec/std Data2024 ALLOY AND T3511 TEMPER
First Tip Radius0.094 INCHES NOMINAL IN
Basic Shape StyleANGLE
Material Document and ClassificationASTM B221 ASSN STD SINGLE MATERIAL RESPONSE
Fabrication MethodEXTRUDED
First Tip Diameter0.188 INCHES NOMINAL IN
Heel Height0.016 INCHES NOMINAL IN
Length10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
Outer Face Bottom Flange Right End Corner Radius2.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4320-00-218-34134334P INTERCHANGEABLE
Ring,wearing
Curtiss-Wright Electro-Mechanical Corporation Div Epd
2530-00-375-85657813722 INTERCHANGEABLE
Ball Joint Assembly
General Motors Llc Dba General Motors Llc
5305-00-527-3867102465 INTERCHANGEABLE
Screw,machine
Telemechanics Inc
4920-00-626-389310265 INTERCHANGEABLE
Valve,fill and Drain
Elbitamerica, Inc.
6240-00-878-1965 INTERCHANGEABLE
Lamp,incandescent
5365-00-914-841710265 INTERCHANGEABLE
Shim Set
L3harris Interstate Electronics Corporation
5998-00-995-376210265 INTERCHANGEABLE
Electronic Components Assembly
Weigh-Tronix Inc
5950-01-025-2288 INTERCHANGEABLE
Coil,radio Frequency
5120-01-077-6036 INTERCHANGEABLE
Wrench,cartridge,special
5331-01-144-4766 INTERCHANGEABLE
O-Ring
Cross-Reference Index
Part NumberManufacturer
ASTM B221 American Society for Testing and Materials Dba Astm International (USA)
QQ-A-200/3 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
10265 Aluminum Co of America (USA)
Related Parts
4320-00-218-3413INTERCHANGEABLE
RING,WEARING
4334P
2530-00-375-8565INTERCHANGEABLE
BALL JOINT ASSEMBLY
7813722
5305-00-527-3867INTERCHANGEABLE
SCREW,MACHINE
102465
4920-00-626-3893INTERCHANGEABLE
VALVE,FILL AND DRAIN
10265
6240-00-878-1965INTERCHANGEABLE
LAMP,INCANDESCENT
5365-00-914-8417INTERCHANGEABLE
SHIM SET
10265
5998-00-995-3762INTERCHANGEABLE
ELECTRONIC COMPONENTS ASSEMBLY
10265
5950-01-025-2288INTERCHANGEABLE
COIL,RADIO FREQUENCY
5120-01-077-6036INTERCHANGEABLE
WRENCH,CARTRIDGE,SPECIAL
5331-01-144-4766INTERCHANGEABLE
O-RING
2530-01-241-2580INTERCHANGEABLE
CYLINDER ASSEMBLY,ACTUATING,LINE
MA10928C
5305-01-386-1518INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
1026-5

Frequently Asked Questions

What is NSN 9540-00-227-8908?

NSN 9540-00-227-8908 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 9540-00-227-8908?

NSN 9540-00-227-8908 has 3 cross-referenced part numbers: ASTM B221 (American Society for Testing and Materials Dba Astm International), QQ-A-200/3 (Federal Specifications Promulgated by General Services Administration Washington DC), 10265 (Aluminum Co of America).

What NSN replaces 9540-00-227-8908?

There are 12 known substitutes for 9540-00-227-8908: 4320-00-218-3413, 2530-00-375-8565, 5305-00-527-3867 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of ASTM B221?

Key specifications for ASTM B221: Left Outside Angle: 90.0 DEGREES NOMINAL; Fillet Radius Where Left Flange Joins Base Flange: 0.094 INCHES NOMINAL IN; Overall Height: 0.875 INCHES NOMINAL IN; Material: ALUMINUM ALLOY 2024. 23 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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