PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8520Shielding Gasket,electronic

A B Boyd Co Dba Boyd Div Southwest Division · NSN 5999-01-049-1508 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-049-1508 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-049-1508. Primary manufacturer part number: 8520.
Features
  • Shielding Gasket,electronic — FSC 5999
  • Aperture Width: 1.678 INCHES NOMINAL IN
  • Environmental Protection Material Location: THROUGHOUT RF SHIELDING GASKET
  • Cross-Sectional Thickness: 0.020 INCHES NOMINAL IN
  • Material: UNABLE TO DECODE
  • Outside Edge to Bolt Hole Center Distance Along Length: 0.308 INCHES NOMINAL IN
  • Bolt Hole Quantity: 6
  • Hole Diameter: 0.168 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
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 5999-01-049-1508, 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 A B Boyd Co Dba Boyd Div Southwest Division. Government technical data includes 20 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. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-01-049-1508
Primary Part Number8520
Item NameShielding Gasket,electronic
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerA B Boyd Co Dba Boyd Div Southwest Division
StatusACTIVE
Aperture Width1.678 INCHES NOMINAL IN
Environmental Protection Material LocationTHROUGHOUT RF SHIELDING GASKET
Cross-Sectional Thickness0.020 INCHES NOMINAL IN
MaterialUNABLE TO DECODE
Outside Edge to Bolt Hole Center Distance Along Length0.308 INCHES NOMINAL IN
Bolt Hole Quantity6
Hole Diameter0.168 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
Center to Center Distance Between Bolt Holes Along Length1.570 INCHES NOMINAL IN
Outside Corner Radius0.090 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
Aperture Length3.141 INCHES NOMINAL IN
Aperture Width1.678 INCHES NOMINAL IN
Environmental Protection Material LocationTHROUGHOUT RF SHIELDING GASKET
Cross-Sectional Thickness0.020 INCHES NOMINAL IN
MaterialUNABLE TO DECODE
Outside Edge to Bolt Hole Center Distance Along Length0.308 INCHES NOMINAL IN
Bolt Hole Quantity6
Hole Diameter0.168 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
Center to Center Distance Between Bolt Holes Along Length1.570 INCHES NOMINAL IN
Outside Corner Radius0.090 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
Aperture Length3.141 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor6145-00-164-7027
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeX
Verified Substitutes 9
Wire,electrical
Wire,electrical
Test Set Subassembly,electrical
5999-00-252-7864719442-1 INTERCHANGEABLE
Shielding Gasket,electronic
Raytheon Company Dba Raytheon
5999-01-049-1505 INTERCHANGEABLE
Shielding Gasket,electronic
5999-01-049-1507 INTERCHANGEABLE
Shielding Gasket,electronic
6220-01-193-196919731 INTERCHANGEABLE
Taillight,vehicular
Honeywell International Inc. Dba Honeyweel Sensing & Controls
5975-01-219-340119731 INTERCHANGEABLE
Panel,blank
Kurz & Root Generator Company, Llc
5340-01-547-038919731 INTERCHANGEABLE
Plug Assembly,sealing
Kloehn Co Ltd
Cross-Reference Index
Part NumberManufacturer
8520 A B Boyd Co Dba Boyd Div Southwest Division (USA)
19731 Technical Wire Products, Llc Dba Twp (USA)
19731 Metal Textiles Corporation Dba Metal Textiles Div Electronic Shielding Group (USA)
19731 Goodrich Corporation Dba Trw Lucas Aerospace (USA)
19731 Parker-Hannifin Corporation Dba Pneutronics Div Chomerics Division (USA)
Related Parts
SUCCESSOR 6145-00-164-7027 Wire,electrical
6145-00-806-9140SUCCESSOR
WIRE,ELECTRICAL
6625-00-951-2451SUCCESSOR
TEST SET SUBASSEMBLY,ELECTRICAL
5999-00-252-7864INTERCHANGEABLE
SHIELDING GASKET,ELECTRONIC
719442-1
5999-01-049-1505INTERCHANGEABLE
SHIELDING GASKET,ELECTRONIC
5999-01-049-1507INTERCHANGEABLE
SHIELDING GASKET,ELECTRONIC
6220-01-193-1969INTERCHANGEABLE
TAILLIGHT,VEHICULAR
19731
5975-01-219-3401INTERCHANGEABLE
PANEL,BLANK
19731
5340-01-547-0389INTERCHANGEABLE
PLUG ASSEMBLY,SEALING
19731

Frequently Asked Questions

What is NSN 5999-01-049-1508?

NSN 5999-01-049-1508 is a Shielding Gasket,electronic, manufactured by A B Boyd Co Dba Boyd Div Southwest Division, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-01-049-1508?

NSN 5999-01-049-1508 has 5 cross-referenced part numbers: 8520 (A B Boyd Co Dba Boyd Div Southwest Division), 19731 (Technical Wire Products, Llc Dba Twp), 19731 (Metal Textiles Corporation Dba Metal Textiles Div Electronic Shielding Group), 19731 (Goodrich Corporation Dba Trw Lucas Aerospace), 19731 (Parker-Hannifin Corporation Dba Pneutronics Div Chomerics Division).

What NSN replaces 5999-01-049-1508?

There are 9 known substitutes for 5999-01-049-1508: 6145-00-164-7027, 6145-00-806-9140, 6625-00-951-2451 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8520?

Key specifications for 8520: Aperture Width: 1.678 INCHES NOMINAL IN; Environmental Protection Material Location: THROUGHOUT RF SHIELDING GASKET; Cross-Sectional Thickness: 0.020 INCHES NOMINAL IN; Material: UNABLE TO DECODE. 24 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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