PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51787Structural Section,special Shape

International Light Metals Corp Sub of Martin Marietta Corp · NSN 9540-00-255-6371 · FSC 9540 · No Item Name Available
Verified by PartsTable
NSN 9540-00-255-6371 — this item is cataloged by the U.S. Government under National Stock Number 9540-00-255-6371. Primary manufacturer part number: 51787.
Features
  • Structural Section,special Shape — FSC 9540
  • Weight Per Unit Measure: 0.694 POUNDS PER LINEAR FOOT LBS
  • Material: ALUMINUM ALLOY 2024
  • Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY MATERIAL,TEMPER AND LENGTH REQUIREMENTS
  • Nondefinitive Spec/std Data: T8511 TEMPER
  • Length: 10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
  • Heat Treatment: T-8511 SOLUTION HEAT TREATED
  • Fabrication Method: EXTRUDED
Applications
  • Applications requiring Aluminum Alloy 2024 construction
General Description

The Structural Section,special Shape, cataloged under National Stock Number 9540-00-255-6371, 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 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN9540-00-255-6371
Primary Part Number51787
Item NameStructural Section,special Shape
FSC / FSG9540 / 95 — No Item Name Available
ManufacturerInternational Light Metals Corp Sub of Martin Marietta Corp
StatusACTIVE
Weight Per Unit Measure0.694 POUNDS PER LINEAR FOOT LBS
MaterialALUMINUM ALLOY 2024
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED BY MATERIAL,TEMPER AND LENGTH REQUIREMENTS
Nondefinitive Spec/std DataT8511 TEMPER
Length10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
Heat TreatmentT-8511 SOLUTION HEAT TREATED
Fabrication MethodEXTRUDED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
2940-00-432-962451787 INTERCHANGEABLE
Filter Element,fluid
Wix Corp
5330-01-033-324751787 INTERCHANGEABLE
Gasket
L3 Technologies, Inc. Div L3 Keo
5340-01-140-0378 INTERCHANGEABLE
Bumper
Cross-Reference Index
Part NumberManufacturer
51787 International Light Metals Corp Sub of Martin Marietta Corp (USA)
QQA200-3 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
1M97154 The Boeing Company Div Defense (USA)
Related Parts
2940-00-432-9624INTERCHANGEABLE
FILTER ELEMENT,FLUID
51787
5330-01-033-3247INTERCHANGEABLE
GASKET
51787
5340-01-140-0378INTERCHANGEABLE
BUMPER

Frequently Asked Questions

What is NSN 9540-00-255-6371?

NSN 9540-00-255-6371 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 9540-00-255-6371?

NSN 9540-00-255-6371 has 3 cross-referenced part numbers: 51787 (International Light Metals Corp Sub of Martin Marietta Corp), QQA200-3 (Federal Specifications Promulgated by General Services Administration Washington DC), 1M97154 (The Boeing Company Div Defense).

What NSN replaces 9540-00-255-6371?

There are 3 known substitutes for 9540-00-255-6371: 2940-00-432-9624, 5330-01-033-3247, 5340-01-140-0378. Verify interchangeability with system specifications before substitution.

What are the specifications of 51787?

Key specifications for 51787: Weight Per Unit Measure: 0.694 POUNDS PER LINEAR FOOT LBS; Material: ALUMINUM ALLOY 2024; Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY MATERIAL,TEMPER AND LENGTH REQUIREMENTS; Nondefinitive Spec/std Data: T8511 TEMPER. 7 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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