PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ASTM B221Angle,structural

American Society for Testing and Materials Dba Astm International · NSN 9540-01-072-9273 · FSC 9540 · No Item Name Available
Verified by PartsTable
NSN 9540-01-072-9273 — this item is cataloged by the U.S. Government under National Stock Number 9540-01-072-9273. Primary manufacturer part number: ASTM B221.
Features
  • Angle,structural — FSC 9540
  • Left Inside Angle: 90.0 DEGREES NOMINAL
  • Second Tip Relationship to First Tip: NOT IDENTICAL
  • Heat Treatment: T-3511 SOLUTION HEAT TREATED
  • Material: ALUMINUM ALLOY 2024
  • Fillet Radius Where Left Flange Joins Base Flange: 0.156 INCHES NOMINAL IN
  • First Tip Radius: 0.063 INCHES NOMINAL IN
  • Material Document and Classification: AMS-QQ-A-200/3 FED SPEC SINGLE MATERIAL RESPONSE
Applications
  • Applications requiring Aluminum Alloy 2024 construction
General Description

The Angle,structural, cataloged under National Stock Number 9540-01-072-9273, 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 11 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN9540-01-072-9273
Primary Part NumberASTM B221
Item NameAngle,structural
FSC / FSG9540 / 95 — No Item Name Available
ManufacturerAmerican Society for Testing and Materials Dba Astm International
StatusCANCELLED
Left Inside Angle90.0 DEGREES NOMINAL
Second Tip Relationship to First TipNOT IDENTICAL
Heat TreatmentT-3511 SOLUTION HEAT TREATED
MaterialALUMINUM ALLOY 2024
Fillet Radius Where Left Flange Joins Base Flange0.156 INCHES NOMINAL IN
First Tip Radius0.063 INCHES NOMINAL IN
Material Document and ClassificationAMS-QQ-A-200/3 FED SPEC SINGLE MATERIAL RESPONSE
Left Side Flange Thickness0.063 INCHES NOMINAL IN
Specification/standard Data81755-K10 MANUFACTURERS STANDARD
Nondefinitive Spec/std Data2024 ALLOY AND T3511 TEMPER
First Tip StyleRIGHT QUARTER RADIUS
Fabrication MethodEXTRUDED
Weight Per Unit Measure0.188 POUNDS PER LINEAR FOOT LBS
Length10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
Base Flange Thickness0.063 INCHES NOMINAL IN
Second Tip StyleUPPER RADIUS
Second Tip Radius0.063 INCHES NOMINAL IN
Basic Shape StyleANGLE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
4320-00-101-0308 INTERCHANGEABLE
Pump,rotary
5360-00-414-074434783 INTERCHANGEABLE
Spring,helical,compression
Setra Systems, Inc. Dba Gems Sensors
3120-00-545-895834783 INTERCHANGEABLE
Bearing
Raytheon Company Dba Raytheon
4820-00-927-9364227618 INTERCHANGEABLE
Valve,double Check Air Brake
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
9540-01-071-4710 INTERCHANGEABLE
Angle,structural
2940-01-129-5522 INTERCHANGEABLE
Filter Element,intake Air Cleane
3220-01-141-380236-L552 INTERCHANGEABLE
Saw,circular,table Type
Delta Intl Machinery Corp
5940-01-148-165834783 INTERCHANGEABLE
Terminal,quick Disconnect
Premier Farnell Llc
9540-01-222-2434 INTERCHANGEABLE
Angle,structural
4820-01-675-463434783 INTERCHANGEABLE
Valve,check
Electro Impulse Laboratory Inc Dba Electro Impulse Inc
Cross-Reference Index
Part NumberManufacturer
ASTM B221 American Society for Testing and Materials Dba Astm International (USA)
34783 Alcoa/reynolds Metals Company (USA)
QQ-A-200/3 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
60-5969 Transtar Metals Corp (USA)
AMS-QQ-A-200/3 Society of Automotive Engineers Inc (USA)
MS14284E155 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
9540PL0864020 Jednolity Indeks Materialowy - Uniform Material Index (POL)
9540PL1909978 Jednolity Indeks Materialowy - Uniform Material Index (POL)
AMS-QQ-A-200/3 Sae International Dba Sae International (USA)
K10A35T3511 Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company (USA)
NAS342-19 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
Related Parts
4320-00-101-0308INTERCHANGEABLE
PUMP,ROTARY
5360-00-414-0744INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
34783
3120-00-545-8958INTERCHANGEABLE
BEARING
34783
4820-00-927-9364INTERCHANGEABLE
VALVE,DOUBLE CHECK AIR BRAKE
227618
9540-01-071-4710INTERCHANGEABLE
ANGLE,STRUCTURAL
2940-01-129-5522INTERCHANGEABLE
FILTER ELEMENT,INTAKE AIR CLEANE
3220-01-141-3802INTERCHANGEABLE
SAW,CIRCULAR,TABLE TYPE
36-L552
5940-01-148-1658INTERCHANGEABLE
TERMINAL,QUICK DISCONNECT
34783
9540-01-222-2434INTERCHANGEABLE
ANGLE,STRUCTURAL
4820-01-675-4634INTERCHANGEABLE
VALVE,CHECK
34783

Frequently Asked Questions

What is NSN 9540-01-072-9273?

NSN 9540-01-072-9273 is a Angle,structural, manufactured by American Society for Testing and Materials Dba Astm International, classified under FSC 9540 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 9540-01-072-9273?

NSN 9540-01-072-9273 has 11 cross-referenced part numbers: ASTM B221 (American Society for Testing and Materials Dba Astm International), 34783 (Alcoa/reynolds Metals Company), QQ-A-200/3 (Federal Specifications Promulgated by General Services Administration Washington DC), 60-5969 (Transtar Metals Corp), AMS-QQ-A-200/3 (Society of Automotive Engineers Inc) and 6 more.

What NSN replaces 9540-01-072-9273?

There are 10 known substitutes for 9540-01-072-9273: 4320-00-101-0308, 5360-00-414-0744, 3120-00-545-8958 and 7 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; Second Tip Relationship to First Tip: NOT IDENTICAL; Heat Treatment: T-3511 SOLUTION HEAT TREATED; Overall Width: 1.500 INCHES NOMINAL IN. 20 total characteristics are documented in the Federal Logistics Information System.

Is NSN 9540-01-072-9273 still in active supply?

NSN 9540-01-072-9273 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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