PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

42803Structural Section,special Shape

International Light Metals Corp Sub of Martin Marietta Corp · NSN 9540-00-175-7634 · FSC 9540 · No Item Name Available
Verified by PartsTable
NSN 9540-00-175-7634 — this item is cataloged by the U.S. Government under National Stock Number 9540-00-175-7634. Primary manufacturer part number: 42803.
Features
  • Structural Section,special Shape — FSC 9540
  • Length: 10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
  • Heat Treatment: T-6511 SOLUTION HEAT TREATED
  • Material: ALUMINUM ALLOY 7075
  • Material Document and Classification: AMS-Q-A-200/11 FED SPEC SINGLE MATERIAL RESPONSE
  • Fabrication Method: EXTRUDED
  • Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY MATERIAL,TEMPER AND LENGTH REQUIREMENTS
  • Weight Per Unit Measure: 0.754 POUNDS PER LINEAR FOOT LBS
Applications
  • Applications requiring Aluminum Alloy 7075 construction
General Description

The Structural Section,special Shape, cataloged under National Stock Number 9540-00-175-7634, 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 International Light Metals Corp Sub of Martin Marietta Corp. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN9540-00-175-7634
Primary Part Number42803
Item NameStructural Section,special Shape
FSC / FSG9540 / 95 — No Item Name Available
ManufacturerInternational Light Metals Corp Sub of Martin Marietta Corp
StatusACTIVE
Length10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
Heat TreatmentT-6511 SOLUTION HEAT TREATED
MaterialALUMINUM ALLOY 7075
Material Document and ClassificationAMS-Q-A-200/11 FED SPEC SINGLE MATERIAL RESPONSE
Fabrication MethodEXTRUDED
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED BY MATERIAL,TEMPER AND LENGTH REQUIREMENTS
Weight Per Unit Measure0.754 POUNDS PER LINEAR FOOT LBS
MaterialALUMINUM ALLOY 7075
Nondefinitive Spec/std Data7075 ALLOY AND T6511 TEMPER
Heat TreatmentT-6511 SOLUTION HEAT TREATED
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED BY MATERIAL,TEMPER AND LENGTH REQUIREMENTS
Nondefinitive Spec/std Data7075 ALLOY AND T6511 TEMPER
Material Document and ClassificationAMS-Q-A-200/11 FED SPEC SINGLE MATERIAL RESPONSE
Weight Per Unit Measure0.754 POUNDS PER LINEAR FOOT LBS
Length10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5330-00-064-738742803 INTERCHANGEABLE
Gasket
Ashcroft Inc Dba Heise
9540-00-261-5225 INTERCHANGEABLE
Structural Section,special Shape
5360-01-097-652514761N PIECE 7 INTERCHANGEABLE
Spring,helical,compression
Leslie Controls, Inc. Dba Leslie Controls Inc
5962-01-178-245942803 INTERCHANGEABLE
Microcircuit,digital
Raytheon Company Div Rmd Strategic
5950-01-267-89622914225-0001 INTERCHANGEABLE
Transformer,power
Raytheon Company Dba Raytheon
5930-01-323-478042803 INTERCHANGEABLE
Switch,flow
Thomas Products Llc
6110-01-429-041142803-1 INTERCHANGEABLE
Panel,power Distribution
Fleet Readiness Center East Div Department of Navy
7610-01-450-8640 INTERCHANGEABLE
Book
6515-01-505-4247428.03 INTERCHANGEABLE
Scoop,stainless Steel
Ams, Inc
2940-01-624-7575142-1404 INTERCHANGEABLE
Filter Element,intake Air Cleane
Caterpillar Inc Div Caterpillar Defense
Cross-Reference Index
Part NumberManufacturer
42803 International Light Metals Corp Sub of Martin Marietta Corp (USA)
ASTM B221 American Society for Testing and Materials Dba Astm International (USA)
LS34315-1 Lockheed Martin Corp (USA)
AMS-QQ-A-200/11 Society of Automotive Engineers Inc (USA)
QQA200-11 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
60-27063 Transtar Metals Corp (USA)
AMS-QQ-A-200/11 Sae International Dba Sae International (USA)
Related Parts
5330-00-064-7387INTERCHANGEABLE
GASKET
42803
9540-00-261-5225INTERCHANGEABLE
STRUCTURAL SECTION,SPECIAL SHAPE
5360-01-097-6525INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
14761N PIECE 7
5962-01-178-2459INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
42803
5950-01-267-8962INTERCHANGEABLE
TRANSFORMER,POWER
2914225-0001
5930-01-323-4780INTERCHANGEABLE
SWITCH,FLOW
42803
6110-01-429-0411INTERCHANGEABLE
PANEL,POWER DISTRIBUTION
42803-1
7610-01-450-8640INTERCHANGEABLE
BOOK
6515-01-505-4247INTERCHANGEABLE
SCOOP,STAINLESS STEEL
428.03
2940-01-624-7575INTERCHANGEABLE
FILTER ELEMENT,INTAKE AIR CLEANE
142-1404
7105-01-668-3734INTERCHANGEABLE
CHAIR,FOLDING

Frequently Asked Questions

What is NSN 9540-00-175-7634?

NSN 9540-00-175-7634 is a Structural Section,special Shape, manufactured by International Light Metals Corp Sub of Martin Marietta Corp, classified under FSC 9540 (No Item Name Available). Status: active.

What are the part numbers for NSN 9540-00-175-7634?

NSN 9540-00-175-7634 has 7 cross-referenced part numbers: 42803 (International Light Metals Corp Sub of Martin Marietta Corp), ASTM B221 (American Society for Testing and Materials Dba Astm International), LS34315-1 (Lockheed Martin Corp), AMS-QQ-A-200/11 (Society of Automotive Engineers Inc), QQA200-11 (Federal Specifications Promulgated by General Services Administration Washington DC) and 2 more.

What NSN replaces 9540-00-175-7634?

There are 11 known substitutes for 9540-00-175-7634: 5330-00-064-7387, 9540-00-261-5225, 5360-01-097-6525 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 42803?

Key specifications for 42803: Length: 10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT; Heat Treatment: T-6511 SOLUTION HEAT TREATED; Material: ALUMINUM ALLOY 7075; Material Document and Classification: AMS-Q-A-200/11 FED SPEC SINGLE MATERIAL RESPONSE. 15 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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