PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3540Shielding Gasket,electronic

Naval Electronic Systems Security Engineering Center · NSN 5999-00-827-1991 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-827-1991 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-827-1991. Primary manufacturer part number: 3540.
Features
  • Shielding Gasket,electronic — FSC 5999
  • Outside Corner Radius: 0.281 INCHES NOMINAL IN
  • Bolt Circle Diameter: 3.500 INCHES NOMINAL IN
  • Side Radius From Gasket Center: 1.500 INCHES NOMINAL IN
  • Bolt Hole Quantity: 2
  • Hole Diameter: 0.180 INCHES NOMINAL IN
  • Cross-Sectional Thickness: 0.020 INCHES NOMINAL IN
  • Environmental Protection Material Location: THROUGHOUT RF SHIELDING GASKET
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Shielding Gasket,electronic, cataloged under National Stock Number 5999-00-827-1991, 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 Naval Electronic Systems Security Engineering Center. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-827-1991
Primary Part Number3540
Item NameShielding Gasket,electronic
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerNaval Electronic Systems Security Engineering Center
StatusACTIVE
Outside Corner Radius0.281 INCHES NOMINAL IN
Bolt Circle Diameter3.500 INCHES NOMINAL IN
Side Radius From Gasket Center1.500 INCHES NOMINAL IN
Bolt Hole Quantity2
Hole Diameter0.180 INCHES NOMINAL IN
Cross-Sectional Thickness0.020 INCHES NOMINAL IN
Environmental Protection Material LocationTHROUGHOUT RF SHIELDING GASKET
Aperture Diameter2.687 INCHES NOMINAL IN
Outside Corner Radius0.281 INCHES NOMINAL IN
Bolt Circle Diameter3.500 INCHES NOMINAL IN
Side Radius From Gasket Center1.500 INCHES NOMINAL IN
Bolt Hole Quantity2
Hole Diameter0.180 INCHES NOMINAL IN
Cross-Sectional Thickness0.020 INCHES NOMINAL IN
Environmental Protection Material LocationTHROUGHOUT RF SHIELDING GASKET
Aperture Diameter2.687 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality Code1
Unit of IssueEA
SMR CodeJZ
Verified Substitutes 12
2805-00-176-784793910H INTERCHANGEABLE
Guide
Navistar Intl Corp Truck Br Ohio Plant
2530-00-232-57202908647 INTERCHANGEABLE
Cylinder Assembly,hydraulic Brak
Chrysler Realty Company Llc Dba Daimler Chrysler
5945-00-352-30004400867 INTERCHANGEABLE
Relay,electromagnetic
Agco Corp Parts Opn
2825-00-446-90633540 INTERCHANGEABLE
Blade,cylinder
Northrop Grumman Systems Corporation Div Marine Systems
5950-00-521-8296603992 INTERCHANGEABLE
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Lockheed Martin Corporation Div Rms - Mitchel Field
3030-00-528-4621 INTERCHANGEABLE
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2910-00-629-1900C1126PL INTERCHANGEABLE
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Honeywell International Inc Dba Honeywell Div Consumer Products Group
4720-00-795-148500-848 INTERCHANGEABLE
Hose,air Duct,air Breathing
Avox Systems Inc Dba Avox Systems Inc
2910-00-904-88776415725 INTERCHANGEABLE
Pump,fuel,cam Actuated
General Motors Llc Dba General Motors Llc
6150-00-935-8740426-1465-000 INTERCHANGEABLE
Cable Assembly,power,electrical
Rockwell Collins, Inc. Div Collins Aerospace - Mission Systems
Cross-Reference Index
Part NumberManufacturer
3540 Naval Electronic Systems Security Engineering Center (USA)
Related Parts
2805-00-176-7847INTERCHANGEABLE
GUIDE
93910H
2530-00-232-5720INTERCHANGEABLE
CYLINDER ASSEMBLY,HYDRAULIC BRAK
2908647
5945-00-352-3000INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
4400867
2825-00-446-9063INTERCHANGEABLE
BLADE,CYLINDER
3540
5950-00-521-8296INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
603992
3030-00-528-4621INTERCHANGEABLE
BELT,V
2910-00-629-1900INTERCHANGEABLE
FILTER ELEMENT,FLUID
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4720-00-795-1485INTERCHANGEABLE
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00-848
2910-00-904-8877INTERCHANGEABLE
PUMP,FUEL,CAM ACTUATED
6415725
6150-00-935-8740INTERCHANGEABLE
CABLE ASSEMBLY,POWER,ELECTRICAL
426-1465-000
5940-00-983-6044INTERCHANGEABLE
TERMINAL BOARD
5998-01-016-1426INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY

Frequently Asked Questions

What is NSN 5999-00-827-1991?

NSN 5999-00-827-1991 is a Shielding Gasket,electronic, manufactured by Naval Electronic Systems Security Engineering Center, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-00-827-1991?

NSN 5999-00-827-1991 has 1 cross-referenced part number: 3540 (Naval Electronic Systems Security Engineering Center).

What NSN replaces 5999-00-827-1991?

There are 12 known substitutes for 5999-00-827-1991: 2805-00-176-7847, 2530-00-232-5720, 5945-00-352-3000 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3540?

Key specifications for 3540: Outside Corner Radius: 0.281 INCHES NOMINAL IN; Overall Width: 4.062 INCHES NOMINAL IN; Bolt Circle Diameter: 3.500 INCHES NOMINAL IN; Side Radius From Gasket Center: 1.500 INCHES NOMINAL IN. 18 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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