PartsTable TECHNICAL DATA SHEET
AUGUST 2026Technical Data Sheet

PA18637Structural Section,special Shape

Transtar Metals Corp · NSN 9540-00-627-5868 · FSC 9540 · No Item Name Available
Verified by PartsTable
NSN 9540-00-627-5868 — this item is cataloged by the U.S. Government under National Stock Number 9540-00-627-5868. Primary manufacturer part number: PA18637.
Features
  • Structural Section,special Shape — FSC 9540
  • Material: ALUMINUM ALLOY 7178
  • Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY LENGTH REQUIREMENT
  • Heat Treatment: T-6 SOLUTION HEAT TREATED
  • Nondefinitive Spec/std Data: T6 TEMPER
  • Fabrication Method: EXTRUDED
  • Weight Per Unit Measure: 1.331 POUNDS PER LINEAR FOOT LBS
  • Length: 10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
Applications
  • Applications requiring Aluminum Alloy 7178 construction
General Description

The Structural Section,special Shape, cataloged under National Stock Number 9540-00-627-5868, 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 Transtar Metals Corp. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN9540-00-627-5868
Primary Part NumberPA18637
Item NameStructural Section,special Shape
FSC / FSG9540 / 95 — No Item Name Available
ManufacturerTranstar Metals Corp
StatusACTIVE
MaterialALUMINUM ALLOY 7178
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED BY LENGTH REQUIREMENT
Heat TreatmentT-6 SOLUTION HEAT TREATED
Nondefinitive Spec/std DataT6 TEMPER
Fabrication MethodEXTRUDED
Weight Per Unit Measure1.331 POUNDS PER LINEAR FOOT LBS
Length10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5985-00-430-80852143968-1 INTERCHANGEABLE
Coupler,directional
Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div
6625-00-695-935023901 INTERCHANGEABLE
Holder,chart
L3harris Technologies, Inc. Div Space and Airborne Systems
3415-01-384-0100 INTERCHANGEABLE
Grinding and Buffing Machine,uti
2530-01-394-834123901 INTERCHANGEABLE
Housing,steering Column
Eaton Corporation Div Eaton Fluid Power
Cross-Reference Index
Part NumberManufacturer
PA18637 Transtar Metals Corp (USA)
LS5264 Lockheed Martin Corp (USA)
QQ-A-200/13 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
23901 International Light Metals Corp Sub of Martin Marietta Corp (USA)
Related Parts
5985-00-430-8085INTERCHANGEABLE
COUPLER,DIRECTIONAL
2143968-1
6625-00-695-9350INTERCHANGEABLE
HOLDER,CHART
23901
3415-01-384-0100INTERCHANGEABLE
GRINDING AND BUFFING MACHINE,UTI
2530-01-394-8341INTERCHANGEABLE
HOUSING,STEERING COLUMN
23901

Frequently Asked Questions

What is NSN 9540-00-627-5868?

NSN 9540-00-627-5868 is a Structural Section,special Shape, manufactured by Transtar Metals Corp, classified under FSC 9540 (No Item Name Available). Status: active.

What are the part numbers for NSN 9540-00-627-5868?

NSN 9540-00-627-5868 has 4 cross-referenced part numbers: PA18637 (Transtar Metals Corp), LS5264 (Lockheed Martin Corp), QQ-A-200/13 (Federal Specifications Promulgated by General Services Administration Washington DC), 23901 (International Light Metals Corp Sub of Martin Marietta Corp).

What NSN replaces 9540-00-627-5868?

There are 4 known substitutes for 9540-00-627-5868: 5985-00-430-8085, 6625-00-695-9350, 3415-01-384-0100 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of PA18637?

Key specifications for PA18637: Material: ALUMINUM ALLOY 7178; Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY LENGTH REQUIREMENT; Heat Treatment: T-6 SOLUTION HEAT TREATED; Nondefinitive Spec/std Data: T6 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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