PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4-1021Shielding Gasket,electronic

Spira Manufacturing Corporation Dba Spira Manufacturing Corp · NSN 5999-01-473-3541 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-473-3541 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-473-3541. Primary manufacturer part number: 4-1021.
Features
  • Shielding Gasket,electronic — FSC 5999
  • Cross Section Outside Diameter: 4.430 INCHES MINIMUM AND 5.160 INCHES MAXIMUM IN
  • Material: UNABLE TO DECODE
  • Cross-Sectional Shape Style: EMI
  • Cross Section Outside Diameter: 4.430 INCHES MINIMUM AND 5.160 INCHES MAXIMUM IN
  • Material: UNABLE TO DECODE
  • Cross-Sectional Shape Style: EMI
  • 2 verified cross-references
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 5999-01-473-3541, 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 Spira Manufacturing Corporation Dba Spira Manufacturing Corp. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-01-473-3541
Primary Part Number4-1021
Item NameShielding Gasket,electronic
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerSpira Manufacturing Corporation Dba Spira Manufacturing Corp
StatusACTIVE
Cross Section Outside Diameter4.430 INCHES MINIMUM AND 5.160 INCHES MAXIMUM IN
MaterialUNABLE TO DECODE
Cross-Sectional Shape StyleEMI
Cross Section Outside Diameter4.430 INCHES MINIMUM AND 5.160 INCHES MAXIMUM IN
MaterialUNABLE TO DECODE
Cross-Sectional Shape StyleEMI
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeQ
Unit of IssueEA
SMR CodeJN
Verified Substitutes 10
4730-00-079-806410-1008-H4-30 INTERCHANGEABLE
Strainer Element,sediment
Tate Andale, Llc
5930-00-681-0529C10612A INTERCHANGEABLE
Switch,rotary
Electro Switch Corp. Dba Electro Switch Corp
6240-00-682-3411039-000654 INTERCHANGEABLE
Lamp,glow
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
5935-00-805-36555317-1 INTERCHANGEABLE
Connector,plug,electrical
Microwave Devices Inc
5905-00-814-3978311-0091-00 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
Tektronix, Inc.
5895-01-074-2276410-21 INTERCHANGEABLE
Transfer Relay Circuit
Charles Industries, Llc Div Telecom
4720-01-133-273613221E8367-1 INTERCHANGEABLE
Tubing,nonmetallic
Cecom Lr Center
3455-01-163-5471 INTERCHANGEABLE
Cutter,milling,end
6240-01-315-446341021 INTERCHANGEABLE
Lamp,glow
Setra Systems, Inc. Dba Gems Sensors
6210-01-374-9857 INTERCHANGEABLE
Light,indicator
Cross-Reference Index
Part NumberManufacturer
13211713 Us Army Aviation and Missile Command (USA)
4-1021 PRIMARY Spira Manufacturing Corporation Dba Spira Manufacturing Corp (USA)
Related Parts
4730-00-079-8064INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
10-1008-H4-30
5930-00-681-0529INTERCHANGEABLE
SWITCH,ROTARY
C10612A
6240-00-682-3411INTERCHANGEABLE
LAMP,GLOW
039-000654
5935-00-805-3655INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
5317-1
5905-00-814-3978INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
311-0091-00
5895-01-074-2276INTERCHANGEABLE
TRANSFER RELAY CIRCUIT
410-21
4720-01-133-2736INTERCHANGEABLE
TUBING,NONMETALLIC
13221E8367-1
3455-01-163-5471INTERCHANGEABLE
CUTTER,MILLING,END
6240-01-315-4463INTERCHANGEABLE
LAMP,GLOW
41021
6210-01-374-9857INTERCHANGEABLE
LIGHT,INDICATOR

Frequently Asked Questions

What is NSN 5999-01-473-3541?

NSN 5999-01-473-3541 is a Shielding Gasket,electronic, manufactured by Spira Manufacturing Corporation Dba Spira Manufacturing Corp, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-01-473-3541?

NSN 5999-01-473-3541 has 2 cross-referenced part numbers: 13211713 (Us Army Aviation and Missile Command), 4-1021 (Spira Manufacturing Corporation Dba Spira Manufacturing Corp).

What NSN replaces 5999-01-473-3541?

There are 10 known substitutes for 5999-01-473-3541: 4730-00-079-8064, 5930-00-681-0529, 6240-00-682-3411 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4-1021?

Key specifications for 4-1021: Cross Section Outside Diameter: 4.430 INCHES MINIMUM AND 5.160 INCHES MAXIMUM IN; Material: UNABLE TO DECODE; Cross-Sectional Shape Style: EMI; End Item Identification: NSN1055-01-423-7668, LAUNCHER,ROCKET,ARMOURED VEHICLE MOUNT. 8 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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