PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

HT199Beam,structural

Kaiser Aluminum and Chemical Corp Trentwood Works-Marketing Dept · NSN 9540-00-555-0816 · FSC 9540 · No Item Name Available
Verified by PartsTable
NSN 9540-00-555-0816 — this item is cataloged by the U.S. Government under National Stock Number 9540-00-555-0816. Primary manufacturer part number: HT199.
Features
  • Beam,structural — FSC 9540
  • Third Tip Style: FULL RADIUS
  • First Tip Radius: 0.125 INCHES NOMINAL IN
  • Right Top Inside Angle: 90.0 DEGREES NOMINAL
  • Length: 10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
  • Left Side Top Flange Thickness: 0.125 INCHES NOMINAL IN
  • Nondefinitive Spec/std Data: T6 TEMPER
  • Material: ALUMINUM ALLOY 7075
Applications
  • Applications requiring Aluminum Alloy 7075 construction
General Description

The Beam,structural, cataloged under National Stock Number 9540-00-555-0816, 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 Kaiser Aluminum and Chemical Corp Trentwood Works-Marketing Dept. Government technical data includes 23 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN9540-00-555-0816
Primary Part NumberHT199
Item NameBeam,structural
FSC / FSG9540 / 95 — No Item Name Available
ManufacturerKaiser Aluminum and Chemical Corp Trentwood Works-Marketing Dept
StatusCANCELLED
Third Tip StyleFULL RADIUS
First Tip Radius0.125 INCHES NOMINAL IN
Right Top Inside Angle90.0 DEGREES NOMINAL
Length10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
Left Side Top Flange Thickness0.125 INCHES NOMINAL IN
Nondefinitive Spec/std DataT6 TEMPER
MaterialALUMINUM ALLOY 7075
Fabrication MethodEXTRUDED
Fillet Radius Where Top Left Flange Joins Web Flange/leg0.125 INCHES NOMINAL IN
Heat TreatmentT-6 SOLUTION HEAT TREATED
Second Tip Relationship to First TipIDENTICAL
Fillet Radius Where Top Right Flange Joins Web Flange/leg0.125 INCHES NOMINAL IN
Third Tip Radius0.062 INCHES NOMINAL IN
First Tip StyleLOWER RADIUS
Third Tip Relationship to Preceding TipsNOT IDENTICAL
Top Flange Width2.000 INCHES NOMINAL IN
Left Side Top Flange Distance to Center of Both Flanges1.000 INCHES NOMINAL IN
Weight Per Unit Measure0.541 POUNDS PER LINEAR FOOT LBS
Leg Thickness0.125 INCHES NOMINAL IN
Right Side Top Flange Thickness0.125 INCHES NOMINAL IN
Left Top Inside Angle90.0 DEGREES NOMINAL
Right Side Top Flange Distance to Center of Both Flanges1.000 INCHES NOMINAL IN
Basic Shape StyleT SHAPE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
2915-00-031-6436236409 INTERCHANGEABLE
Piston,valve,air Driven
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
5360-00-079-953740548 INTERCHANGEABLE
Spring,helical,compression
Bae Systems Land & Armaments L.p.
5940-00-259-9057115704-001 INTERCHANGEABLE
Terminal,lug
Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
5330-00-286-8149 INTERCHANGEABLE
Seal,plain Encased
1660-00-395-713814626 INTERCHANGEABLE
Diaphragm,regulator
Honeywell International, Inc Div Aerospace-Tucson
3010-00-504-6256 INTERCHANGEABLE
Pressure Plate Assembly,clutch
9540-00-596-3196 INTERCHANGEABLE
Beam,structural
3455-00-995-190911720 INTERCHANGEABLE
Cutter,milling,woodruff Keyseat
Niagara Cutter Inc
9540-01-071-4737 INTERCHANGEABLE
Beam,structural
5998-01-170-0607 INTERCHANGEABLE
Circuit Card Assembly
Cross-Reference Index
Part NumberManufacturer
HT199 Kaiser Aluminum and Chemical Corp Trentwood Works-Marketing Dept (USA)
AMS 4154 Society of Automotive Engineers Inc (USA)
10119 Reynolds Metals Co (USA)
AMS10136-2008 Society of Automotive Engineers Inc (USA)
14626 International Light Metals Corp Sub of Martin Marietta Corp (USA)
AMS-QQ-A-200/11 Society of Automotive Engineers Inc (USA)
40548 Bohn Aluminum and Brass Co Div of Gulf and Western Mfg Co Sub of Gulf and Western Industries (USA)
FS50105-2018 Hiller Aircraft Corporation (USA)
QQ-A-200/11 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
AND10136-2008 Airforce-Navy Aeronautical Design Standard
AMS 4154 Sae International Dba Sae International (USA)
AMS10136-2008 Sae International Dba Sae International (USA)
Related Parts
2915-00-031-6436INTERCHANGEABLE
PISTON,VALVE,AIR DRIVEN
236409
5360-00-079-9537INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
40548
5940-00-259-9057INTERCHANGEABLE
TERMINAL,LUG
115704-001
5330-00-286-8149INTERCHANGEABLE
SEAL,PLAIN ENCASED
1660-00-395-7138INTERCHANGEABLE
DIAPHRAGM,REGULATOR
14626
3010-00-504-6256INTERCHANGEABLE
PRESSURE PLATE ASSEMBLY,CLUTCH
9540-00-596-3196INTERCHANGEABLE
BEAM,STRUCTURAL
3455-00-995-1909INTERCHANGEABLE
CUTTER,MILLING,WOODRUFF KEYSEAT
11720
9540-01-071-4737INTERCHANGEABLE
BEAM,STRUCTURAL
5998-01-170-0607INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
6680-01-208-5642INTERCHANGEABLE
TRANSMITTER,LIQUID QUANTITY
40548
4820-01-262-7630INTERCHANGEABLE
STEM,FLUID VALVE
1296-00

Frequently Asked Questions

What is NSN 9540-00-555-0816?

NSN 9540-00-555-0816 is a Beam,structural, manufactured by Kaiser Aluminum and Chemical Corp Trentwood Works-Marketing Dept, classified under FSC 9540 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 9540-00-555-0816?

NSN 9540-00-555-0816 has 12 cross-referenced part numbers: HT199 (Kaiser Aluminum and Chemical Corp Trentwood Works-Marketing Dept), AMS 4154 (Society of Automotive Engineers Inc), 10119 (Reynolds Metals Co), AMS10136-2008 (Society of Automotive Engineers Inc), 14626 (International Light Metals Corp Sub of Martin Marietta Corp) and 7 more.

What NSN replaces 9540-00-555-0816?

There are 12 known substitutes for 9540-00-555-0816: 2915-00-031-6436, 5360-00-079-9537, 5940-00-259-9057 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of HT199?

Key specifications for HT199: Third Tip Style: FULL RADIUS; First Tip Radius: 0.125 INCHES NOMINAL IN; Right Top Inside Angle: 90.0 DEGREES NOMINAL; Length: 10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT. 24 total characteristics are documented in the Federal Logistics Information System.

Is NSN 9540-00-555-0816 still in active supply?

NSN 9540-00-555-0816 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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