PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ASTM B221Angle,structural

American Society for Testing and Materials Dba Astm International · NSN 9540-00-596-2783 · FSC 9540 · No Item Name Available
Verified by PartsTable
NSN 9540-00-596-2783 — this item is cataloged by the U.S. Government under National Stock Number 9540-00-596-2783. Primary manufacturer part number: ASTM B221.
Features
  • Angle,structural — FSC 9540
  • Left Inside Angle: 90.0 DEGREES NOMINAL
  • Left Side Flange Thickness: 0.188 INCHES NOMINAL IN
  • Basic Shape Style: ANGLE
  • First Tip Style: RIGHT QUARTER RADIUS
  • Material: ALUMINUM ALLOY 2024
  • Fillet Radius Where Left Flange Joins Base Flange: 0.250 INCHES NOMINAL IN
  • First Tip Radius: 0.188 INCHES NOMINAL IN
Applications
  • Applications requiring Aluminum Alloy 2024 construction
General Description

The Angle,structural, cataloged under National Stock Number 9540-00-596-2783, 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 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN9540-00-596-2783
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 Inside Angle90.0 DEGREES NOMINAL
Left Side Flange Thickness0.188 INCHES NOMINAL IN
Basic Shape StyleANGLE
First Tip StyleRIGHT QUARTER RADIUS
MaterialALUMINUM ALLOY 2024
Fillet Radius Where Left Flange Joins Base Flange0.250 INCHES NOMINAL IN
First Tip Radius0.188 INCHES NOMINAL IN
Material Document and ClassificationAMS-QQ-A-200/3 FED SPEC SINGLE MATERIAL RESPONSE
Second Tip Radius0.063 INCHES NOMINAL IN
Second Tip Relationship to First TipNOT IDENTICAL
Weight Per Unit Measure0.490 POUNDS PER LINEAR FOOT LBS
Base Flange Thickness0.211 INCHES NOMINAL IN
Nondefinitive Spec/std Data2024 ALLOY AND T4 TEMPER
Heat TreatmentT-4 SOLUTION HEAT TREATED
Length10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
Fabrication MethodEXTRUDED
Second Tip StyleLOWER RADIUS
Outer Radius Where Left Flange Joins Base Flange0.219 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5330-00-118-33069667 INTERCHANGEABLE
Gasket
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
5330-00-154-12261496 INTERCHANGEABLE
Seal,plain Encased
Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc
5310-00-436-183060-871 INTERCHANGEABLE
Washer,flat
Triumph Thermal Systems - Maryland, Inc.
3110-00-554-3197 INTERCHANGEABLE
Bearing,ball,annular
2520-00-574-91244457 INTERCHANGEABLE
Shifter Fork,vehicular
Trackmobile Llc
5330-00-936-9594 INTERCHANGEABLE
Seal,plain Encased
5961-01-065-60021854-0464 INTERCHANGEABLE
Transistor
Keysight Technologies Inc
6530-01-345-408960871 INTERCHANGEABLE
Indicator,sterilization
Getinge Usa Inc
Cross-Reference Index
Part NumberManufacturer
ASTM B221 American Society for Testing and Materials Dba Astm International (USA)
144773 The Boeing Company (USA)
144773 The Boeing Company (USA)
9667 Aluminum Co of America (USA)
PA11779 Transtar Metals Corp (USA)
AMS-QQ-A-200/3 Society of Automotive Engineers Inc (USA)
60-871 Transtar Metals Corp (USA)
QQ-A-200/3 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
AMS-QQ-A-200/3 Sae International Dba Sae International (USA)
Related Parts
5330-00-118-3306INTERCHANGEABLE
GASKET
9667
5330-00-154-1226INTERCHANGEABLE
SEAL,PLAIN ENCASED
1496
5310-00-436-1830INTERCHANGEABLE
WASHER,FLAT
60-871
3110-00-554-3197INTERCHANGEABLE
BEARING,BALL,ANNULAR
2520-00-574-9124INTERCHANGEABLE
SHIFTER FORK,VEHICULAR
4457
5330-00-936-9594INTERCHANGEABLE
SEAL,PLAIN ENCASED
5961-01-065-6002INTERCHANGEABLE
TRANSISTOR
1854-0464
6530-01-345-4089INTERCHANGEABLE
INDICATOR,STERILIZATION
60871

Frequently Asked Questions

What is NSN 9540-00-596-2783?

NSN 9540-00-596-2783 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 9540-00-596-2783?

NSN 9540-00-596-2783 has 9 cross-referenced part numbers: ASTM B221 (American Society for Testing and Materials Dba Astm International), 144773 (The Boeing Company), 144773 (The Boeing Company), 9667 (Aluminum Co of America), PA11779 (Transtar Metals Corp) and 4 more.

What NSN replaces 9540-00-596-2783?

There are 8 known substitutes for 9540-00-596-2783: 5330-00-118-3306, 5330-00-154-1226, 5310-00-436-1830 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of ASTM B221?

Key specifications for ASTM B221: Left Inside Angle: 90.0 DEGREES NOMINAL; Left Side Flange Thickness: 0.188 INCHES NOMINAL IN; Basic Shape Style: ANGLE; First Tip Style: RIGHT QUARTER RADIUS. 20 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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