PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

78GAngle,structural

Aluminum Co of America · NSN 9540-00-250-1059 · FSC 9540 · No Item Name Available
Verified by PartsTable
NSN 9540-00-250-1059 — this item is cataloged by the U.S. Government under National Stock Number 9540-00-250-1059. Primary manufacturer part number: 78G.
Features
  • Angle,structural — FSC 9540
  • Left Inside Angle: 90.0 DEGREES NOMINAL
  • Second Tip Style: UPPER RADIUS
  • Fabrication Method: EXTRUDED
  • Material: ALUMINUM ALLOY 6061
  • Second Tip Radius: 0.250 INCHES NOMINAL IN
  • Weight Per Unit Measure: 2.030 POUNDS PER LINEAR FOOT LBS
  • Heat Treatment: T-6 SOLUTION HEAT TREATED
Applications
  • Applications requiring Aluminum Alloy 6061 construction
General Description

The Angle,structural, cataloged under National Stock Number 9540-00-250-1059, 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 Aluminum Co of America. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 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
NSN9540-00-250-1059
Primary Part Number78G
Item NameAngle,structural
FSC / FSG9540 / 95 — No Item Name Available
ManufacturerAluminum Co of America
StatusACTIVE
Left Inside Angle90.0 DEGREES NOMINAL
Second Tip StyleUPPER RADIUS
Fabrication MethodEXTRUDED
MaterialALUMINUM ALLOY 6061
Second Tip Radius0.250 INCHES NOMINAL IN
Weight Per Unit Measure2.030 POUNDS PER LINEAR FOOT LBS
Heat TreatmentT-6 SOLUTION HEAT TREATED
Base Flange Thickness0.250 INCHES NOMINAL IN
Left Side Flange Thickness0.250 INCHES NOMINAL IN
First Tip StyleRIGHT QUARTER RADIUS
Material Document and ClassificationAMS-QQ-A-200/8 FED SPEC SINGLE MATERIAL RESPONSE
Nondefinitive Spec/std Data6061 ALLOY AND T6 TEMPER
Fillet Radius Where Left Flange Joins Base Flange0.375 INCHES NOMINAL IN
Length20.000 FEET MINIMUM AND 30.000 FEET MAXIMUM FT
Second Tip Relationship to First TipNOT IDENTICAL
Basic Shape StyleANGLE
First Tip Radius0.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4920-00-041-12803659 INTERCHANGEABLE
Nozzle,test,engine
Allison Transmission Inc Dba Allison Transmission, Inc
3110-00-100-07843659 INTERCHANGEABLE
Cone and Rollers,tapered Roller
The Timken Corporation
3460-00-293-16233659 INTERCHANGEABLE
Key,drill Chuck
Jacobs Chuck Mfg Co
6615-00-433-3511 INTERCHANGEABLE
Geartrain Synchroni
9540-00-542-2727 INTERCHANGEABLE
Angle,structural
5340-01-017-2437HS5530-0003 INTERCHANGEABLE
Clip,spring Tension
The Boeing Company
6520-01-153-6247630R INTERCHANGEABLE
Wheel,abrasive
Kerr Corporation
5120-01-161-19185120-01-161-1918 INTERCHANGEABLE
Blade,nutdriver
General Services Administration Federal Supply Service
5950-01-283-865611822 INTERCHANGEABLE
Reactor
Sora Power Inc. Dba Sigma Division
5310-01-532-51403659 INTERCHANGEABLE
Washer,flat
80/20, Llc
Cross-Reference Index
Part NumberManufacturer
78G PRIMARY Aluminum Co of America (USA)
HA261 PRIMARY Kaiser Aluminum and Chemical Corp (USA)
60-11807 PRIMARY Transtar Metals Corp (USA)
PA3490 Transtar Metals Corp (USA)
ASTM B221 American Society for Testing and Materials Dba Astm International (USA)
QQ-A-200/8 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
3659 PRIMARY Alcoa/reynolds Metals Company (USA)
AMS-QQ-A-200/8 Sae International Dba Sae International (USA)
AMS-QQ-A-200/8 Society of Automotive Engineers Inc (USA)
Related Parts
4920-00-041-1280INTERCHANGEABLE
NOZZLE,TEST,ENGINE
3659
3110-00-100-0784INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
3659
3460-00-293-1623INTERCHANGEABLE
KEY,DRILL CHUCK
3659
6615-00-433-3511INTERCHANGEABLE
GEARTRAIN SYNCHRONI
9540-00-542-2727INTERCHANGEABLE
ANGLE,STRUCTURAL
5340-01-017-2437INTERCHANGEABLE
CLIP,SPRING TENSION
HS5530-0003
6520-01-153-6247INTERCHANGEABLE
WHEEL,ABRASIVE
630R
5120-01-161-1918INTERCHANGEABLE
BLADE,NUTDRIVER
5120-01-161-1918
5950-01-283-8656INTERCHANGEABLE
REACTOR
11822
5310-01-532-5140INTERCHANGEABLE
WASHER,FLAT
3659
4730-01-680-5276INTERCHANGEABLE
ELBOW,PIPE
3659
6515-01-686-4899INTERCHANGEABLE
CABLE,VITAL SIGNS MONITOR
3659

Frequently Asked Questions

What is NSN 9540-00-250-1059?

NSN 9540-00-250-1059 is a Angle,structural, manufactured by Aluminum Co of America, classified under FSC 9540 (No Item Name Available). Status: active.

What are the part numbers for NSN 9540-00-250-1059?

NSN 9540-00-250-1059 has 9 cross-referenced part numbers: 78G (Aluminum Co of America), HA261 (Kaiser Aluminum and Chemical Corp), 60-11807 (Transtar Metals Corp), PA3490 (Transtar Metals Corp), ASTM B221 (American Society for Testing and Materials Dba Astm International) and 4 more.

What NSN replaces 9540-00-250-1059?

There are 12 known substitutes for 9540-00-250-1059: 4920-00-041-1280, 3110-00-100-0784, 3460-00-293-1623 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 78G?

Key specifications for 78G: Left Inside Angle: 90.0 DEGREES NOMINAL; Second Tip Style: UPPER RADIUS; Fabrication Method: EXTRUDED; Material: ALUMINUM ALLOY 6061. 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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