PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

341004Shielding Gasket,electronic

Lockheed Martin Corporation Div Rms - Mitchel Field · NSN 5999-00-658-9654 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-658-9654 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-658-9654. Primary manufacturer part number: 341004.
Features
  • Shielding Gasket,electronic — FSC 5999
  • Cross-Sectional Shape Style: EMI
  • Outside Diameter: 6.188 INCHES NOMINAL IN
  • Aperture Diameter: 5.312 INCHES NOMINAL IN
  • Style Designator: CIRCULAR
  • Material: UNABLE TO DECODE
  • Cross-Sectional Height: 0.125 INCHES NOMINAL IN
  • Material: UNABLE TO DECODE
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Unable to Decode construction
General Description

The Shielding Gasket,electronic, cataloged under National Stock Number 5999-00-658-9654, is classified within Federal Supply Class 5999 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Lockheed Martin Corporation Div Rms - Mitchel Field. Government technical data includes 16 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-658-9654
Primary Part Number341004
Item NameShielding Gasket,electronic
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerLockheed Martin Corporation Div Rms - Mitchel Field
StatusCANCELLED
Cross-Sectional Shape StyleEMI
Outside Diameter6.188 INCHES NOMINAL IN
Aperture Diameter5.312 INCHES NOMINAL IN
Style DesignatorCIRCULAR
MaterialUNABLE TO DECODE
Cross-Sectional Height0.125 INCHES NOMINAL IN
MaterialUNABLE TO DECODE
Environmental Protection Material LocationAROUND RF SHIELDING GASKET OUTER PERIMETER
Cross-Sectional Shape StyleEMI
Outside Diameter6.188 INCHES NOMINAL IN
Aperture Diameter5.312 INCHES NOMINAL IN
Style DesignatorCIRCULAR
MaterialUNABLE TO DECODE
Cross-Sectional Height0.125 INCHES NOMINAL IN
MaterialUNABLE TO DECODE
Environmental Protection Material LocationAROUND RF SHIELDING GASKET OUTER PERIMETER
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeJ
Weight0.0900 lbs
Cube0.0100 cu ft
Verified Substitutes 12
No Item Name Available
4820-00-018-04254086 INTERCHANGEABLE
Disk,valve
Circor Aerospace, Inc. Dba Circor Aerospace Inc
3040-00-146-3841341004 INTERCHANGEABLE
Shaft,flexible
International Business Machines Corp Parts Order Center Dept E - 54
5120-00-221-796141H1504-350 INTERCHANGEABLE
Handle,socket Wrench
Marine Corps
9540-00-261-5112 INTERCHANGEABLE
Angle,structural
3040-00-343-6621 INTERCHANGEABLE
Shaft,drive,flexible
6210-00-783-77614086 INTERCHANGEABLE
Lens,light
L3harris Technologies, Inc. Div Space and Airborne Systems
4820-00-807-8012590423 INTERCHANGEABLE
Valve,flow Control
Eaton Aerospace, Llc Dba Jackson South
6685-00-896-0009341-004 INTERCHANGEABLE
Dampener,fluid Pressure
Jaidinger Manufacturing Co Inc Dba Jaidinger Manufacturing Co Inc
5310-00-898-335311154443-2 INTERCHANGEABLE
Nut,plain,knurled
Us Army Aviation and Missile Command
Cross-Reference Index
Part NumberManufacturer
03-0102-0749 Parker-Hannifin Corporation Dba Pneutronics Div Chomerics Division (USA)
4086 Metal Textile Div of General Cable Corp (USA)
1855079 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
341004 PRIMARY Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
03-0102-0749 Metal Textiles Corporation Dba Metal Textiles Div Electronic Shielding Group (USA)
Related Parts
5999-00-500-9486SUCCESSOR
NO ITEM NAME AVAILABLE
4820-00-018-0425INTERCHANGEABLE
DISK,VALVE
4086
3040-00-146-3841INTERCHANGEABLE
SHAFT,FLEXIBLE
341004
5120-00-221-7961INTERCHANGEABLE
HANDLE,SOCKET WRENCH
41H1504-350
9540-00-261-5112INTERCHANGEABLE
ANGLE,STRUCTURAL
3040-00-343-6621INTERCHANGEABLE
SHAFT,DRIVE,FLEXIBLE
6210-00-783-7761INTERCHANGEABLE
LENS,LIGHT
4086
4820-00-807-8012INTERCHANGEABLE
VALVE,FLOW CONTROL
590423
6685-00-896-0009INTERCHANGEABLE
DAMPENER,FLUID PRESSURE
341-004
5310-00-898-3353INTERCHANGEABLE
NUT,PLAIN,KNURLED
11154443-2
5950-00-941-7981INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
11586607
4730-01-054-3836INTERCHANGEABLE
ELBOW,PIPE TO TUBE
4086

Frequently Asked Questions

What is NSN 5999-00-658-9654?

NSN 5999-00-658-9654 is a Shielding Gasket,electronic, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 5999 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5999-00-658-9654?

NSN 5999-00-658-9654 has 5 cross-referenced part numbers: 03-0102-0749 (Parker-Hannifin Corporation Dba Pneutronics Div Chomerics Division), 4086 (Metal Textile Div of General Cable Corp), 1855079 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 341004 (Lockheed Martin Corporation Div Rms - Mitchel Field), 03-0102-0749 (Metal Textiles Corporation Dba Metal Textiles Div Electronic Shielding Group).

What NSN replaces 5999-00-658-9654?

There are 12 known substitutes for 5999-00-658-9654: 5999-00-500-9486, 4820-00-018-0425, 3040-00-146-3841 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 341004?

Key specifications for 341004: Cross-Sectional Shape Style: EMI; Outside Diameter: 6.188 INCHES NOMINAL IN; Aperture Diameter: 5.312 INCHES NOMINAL IN; Style Designator: CIRCULAR. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5999-00-658-9654 still in active supply?

NSN 5999-00-658-9654 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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