PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ASTM B221Angle,structural

American Society for Testing and Materials Dba Astm International · NSN 9540-00-596-2999 · FSC 9540 · No Item Name Available
Verified by PartsTable
NSN 9540-00-596-2999 — this item is cataloged by the U.S. Government under National Stock Number 9540-00-596-2999. Primary manufacturer part number: ASTM B221.
Features
  • Angle,structural — FSC 9540
  • Fabrication Method: EXTRUDED
  • Heat Treatment: T-6 SOLUTION HEAT TREATED
  • Left Inside Angle: 90.0 DEGREES NOMINAL
  • Material: ALUMINUM ALLOY 7075
  • Left Side Flange Thickness: 0.125 INCHES NOMINAL IN
  • First Tip Style: RIGHT QUARTER RADIUS
  • Second Tip Relationship to First Tip: NOT IDENTICAL
Applications
  • Applications requiring Aluminum Alloy 7075 construction
General Description

The Angle,structural, cataloged under National Stock Number 9540-00-596-2999, 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 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 8 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
NSN9540-00-596-2999
Primary Part NumberASTM B221
Item NameAngle,structural
FSC / FSG9540 / 95 — No Item Name Available
ManufacturerAmerican Society for Testing and Materials Dba Astm International
StatusACTIVE
Fabrication MethodEXTRUDED
Heat TreatmentT-6 SOLUTION HEAT TREATED
Left Inside Angle90.0 DEGREES NOMINAL
MaterialALUMINUM ALLOY 7075
Left Side Flange Thickness0.125 INCHES NOMINAL IN
First Tip StyleRIGHT QUARTER RADIUS
Second Tip Relationship to First TipNOT IDENTICAL
Second Tip Radius0.125 INCHES NOMINAL IN
Weight Per Unit Measure0.200 POUNDS PER LINEAR FOOT LBS
Material Document and ClassificationAMS-Q-A-200/11 FED SPEC SINGLE MATERIAL RESPONSE
Nondefinitive Spec/std Data7075 ALLOY AND T6 TEMPER
Base Flange Thickness0.125 INCHES NOMINAL IN
Length10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
Second Tip StyleUPPER RADIUS
Fillet Radius Where Left Flange Joins Base Flange0.094 INCHES NOMINAL IN
Basic Shape StyleANGLE
First Tip Radius0.125 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4130-00-061-870369-93 INTERCHANGEABLE
Filter Element,air Conditioning
Curtiss-Wright Controls Integrated Sensing, Inc.
4310-00-062-43516992 INTERCHANGEABLE
Ring,piston
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
5995-00-087-23256993 INTERCHANGEABLE
Cable Assembly,power,electrical
Spencer Industries Inc
9540-00-197-9848 INTERCHANGEABLE
Angle,structural
5360-00-250-01866993 INTERCHANGEABLE
Spring,helical,compression
Telemechanics Inc
3110-00-277-0682582 INTERCHANGEABLE
Cone and Rollers,tapered Roller
The Timken Corporation
2805-00-390-33311173 INTERCHANGEABLE
Ring Set,piston
Spirolox Inc
5930-00-407-17966993 INTERCHANGEABLE
Switch,rotary
Triplett (bluffton) Corporation Dba Lfe Instruments
9540-00-471-0496 INTERCHANGEABLE
Angle,structural
5910-00-486-9518 INTERCHANGEABLE
Capacitor,variable,mica Dielectr
Cross-Reference Index
Part NumberManufacturer
ASTM B221 American Society for Testing and Materials Dba Astm International (USA)
HA358 Kaiser Aluminum and Chemical Corp Trentwood Works-Marketing Dept (USA)
582 Light Metals Corp (USA)
AMS-QQ-A-200/11 Society of Automotive Engineers Inc (USA)
6993 Reynolds Metals Co (USA)
AMS-QQ-A-200/11 Sae International Dba Sae International (USA)
AND10133-0603 Airforce-Navy Aeronautical Design Standard
QQ-A-200/11 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
4130-00-061-8703INTERCHANGEABLE
FILTER ELEMENT,AIR CONDITIONING
69-93
4310-00-062-4351INTERCHANGEABLE
RING,PISTON
6992
5995-00-087-2325INTERCHANGEABLE
CABLE ASSEMBLY,POWER,ELECTRICAL
6993
9540-00-197-9848INTERCHANGEABLE
ANGLE,STRUCTURAL
5360-00-250-0186INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
6993
3110-00-277-0682INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
582
2805-00-390-3331INTERCHANGEABLE
RING SET,PISTON
1173
5930-00-407-1796INTERCHANGEABLE
SWITCH,ROTARY
6993
9540-00-471-0496INTERCHANGEABLE
ANGLE,STRUCTURAL
5910-00-486-9518INTERCHANGEABLE
CAPACITOR,VARIABLE,MICA DIELECTR
9540-00-542-2692INTERCHANGEABLE
ANGLE,STRUCTURAL
5340-00-598-3072INTERCHANGEABLE
LATCH,RIM
5604RH

Frequently Asked Questions

What is NSN 9540-00-596-2999?

NSN 9540-00-596-2999 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 9540-00-596-2999?

NSN 9540-00-596-2999 has 8 cross-referenced part numbers: ASTM B221 (American Society for Testing and Materials Dba Astm International), HA358 (Kaiser Aluminum and Chemical Corp Trentwood Works-Marketing Dept), 582 (Light Metals Corp), AMS-QQ-A-200/11 (Society of Automotive Engineers Inc), 6993 (Reynolds Metals Co) and 3 more.

What NSN replaces 9540-00-596-2999?

There are 12 known substitutes for 9540-00-596-2999: 4130-00-061-8703, 4310-00-062-4351, 5995-00-087-2325 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of ASTM B221?

Key specifications for ASTM B221: Fabrication Method: EXTRUDED; Heat Treatment: T-6 SOLUTION HEAT TREATED; Left Inside Angle: 90.0 DEGREES NOMINAL; Material: ALUMINUM ALLOY 7075. 19 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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