PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

LS637Angle,structural

Lockheed Martin Corp · NSN 9540-00-595-8555 · FSC 9540 · No Item Name Available
Verified by PartsTable
NSN 9540-00-595-8555 — this item is cataloged by the U.S. Government under National Stock Number 9540-00-595-8555. Primary manufacturer part number: LS637.
Features
  • Angle,structural — FSC 9540
  • Base Flange Thickness: 0.100 INCHES NOMINAL IN
  • Material: ALUMINUM ALLOY
  • Length: 10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
  • Left Side Flange Thickness: 0.064 INCHES NOMINAL IN
  • Fabrication Method: EXTRUDED
  • Weight Per Unit Measure: 0.370 POUNDS PER LINEAR FOOT LBS
  • Fillet Radius Where Left Flange Joins Base Flange: 0.030 INCHES NOMINAL IN
Applications
  • Applications requiring Aluminum Alloy construction
General Description

The Angle,structural, cataloged under National Stock Number 9540-00-595-8555, 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 Lockheed Martin Corp. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN9540-00-595-8555
Primary Part NumberLS637
Item NameAngle,structural
FSC / FSG9540 / 95 — No Item Name Available
ManufacturerLockheed Martin Corp
StatusACTIVE
Base Flange Thickness0.100 INCHES NOMINAL IN
MaterialALUMINUM ALLOY
Length10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
Left Side Flange Thickness0.064 INCHES NOMINAL IN
Fabrication MethodEXTRUDED
Weight Per Unit Measure0.370 POUNDS PER LINEAR FOOT LBS
Fillet Radius Where Left Flange Joins Base Flange0.030 INCHES NOMINAL IN
Specification/standard Data81348-QQ-A-200/3 GOVERNMENT SPECIFICATION
Left Flange Thickness at Base0.189 INCHES NOMINAL IN
Basic Shape StyleANGLE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5136-00-189-31285136-00-189-3128 INTERCHANGEABLE
Die,rethreading
General Services Administration Federal Supply Service
3110-00-769-14264TL68111 INTERCHANGEABLE
Cup,tapered Roller Bearing
Ntn Bearing Corporation of America
5985-00-834-47939159596 INTERCHANGEABLE
Coupler,directional
Us Army Aviation and Missile Command
5935-00-856-443531331 INTERCHANGEABLE
Adapter,connector
Itt Cannon Rf Products
5945-00-943-9235 INTERCHANGEABLE
Relay,resonant Reed
5305-01-099-643811662344 INTERCHANGEABLE
Screw,cap,hexagon Head
U S Army Tank Automotive Command Amsta-Im-Mm
6550-01-153-3630231331 INTERCHANGEABLE
Sensitivity Discs,diagnostic
Becton, Dickinson and Co Dba Becton Dickinson & Co
5305-01-317-988931331 INTERCHANGEABLE
Screw,self-Drilling
Moog Inc. Dba Ampac-Isp Corp
6650-01-508-781731331 INTERCHANGEABLE
Mirror,optical Instrument
Cooper Surgical
Cross-Reference Index
Part NumberManufacturer
LS637 Lockheed Martin Corp (USA)
31331 Aluminum Co of America (USA)
AMS-QQ-A-200/3 Sae International Dba Sae International (USA)
QQ-A-200/3 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
AMS-QQ-A-200/3 Society of Automotive Engineers Inc (USA)
Related Parts
5136-00-189-3128INTERCHANGEABLE
DIE,RETHREADING
5136-00-189-3128
3110-00-769-1426INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
4TL68111
5985-00-834-4793INTERCHANGEABLE
COUPLER,DIRECTIONAL
9159596
5935-00-856-4435INTERCHANGEABLE
ADAPTER,CONNECTOR
31331
5945-00-943-9235INTERCHANGEABLE
RELAY,RESONANT REED
5305-01-099-6438INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
11662344
6550-01-153-3630INTERCHANGEABLE
SENSITIVITY DISCS,DIAGNOSTIC
231331
5305-01-317-9889INTERCHANGEABLE
SCREW,SELF-DRILLING
31331
6650-01-508-7817INTERCHANGEABLE
MIRROR,OPTICAL INSTRUMENT
31331

Frequently Asked Questions

What is NSN 9540-00-595-8555?

NSN 9540-00-595-8555 is a Angle,structural, manufactured by Lockheed Martin Corp, classified under FSC 9540 (No Item Name Available). Status: active.

What are the part numbers for NSN 9540-00-595-8555?

NSN 9540-00-595-8555 has 5 cross-referenced part numbers: LS637 (Lockheed Martin Corp), 31331 (Aluminum Co of America), AMS-QQ-A-200/3 (Sae International Dba Sae International), QQ-A-200/3 (Federal Specifications Promulgated by General Services Administration Washington DC), AMS-QQ-A-200/3 (Society of Automotive Engineers Inc).

What NSN replaces 9540-00-595-8555?

There are 9 known substitutes for 9540-00-595-8555: 5136-00-189-3128, 3110-00-769-1426, 5985-00-834-4793 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of LS637?

Key specifications for LS637: Base Flange Thickness: 0.100 INCHES NOMINAL IN; Material: ALUMINUM ALLOY; Length: 10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT; Left Side Flange Thickness: 0.064 INCHES NOMINAL IN. 12 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com