PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5M988-8Shielding Gasket,electronic

The Boeing Company Div Defense · NSN 5999-00-900-0591 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-900-0591 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-900-0591. Primary manufacturer part number: 5M988-8.
Features
  • Shielding Gasket,electronic — FSC 5999
  • Aperture Diameter: 1.250 INCHES NOMINAL IN
  • Hole Diameter: 0.203 INCHES NOMINAL IN
  • Style Designator: NON-CIRCULAR
  • Outside Edge to Bolt Hole Center Distance Along Width: 0.172 INCHES NOMINAL IN
  • Environmental Protection Material Location: THROUGHOUT RF SHIELDING GASKET
  • Cross-Sectional Shape Style: EMI
  • Outside Edge to Bolt Hole Center Distance Along Length: 0.172 INCHES NOMINAL 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 5999-00-900-0591, 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 The Boeing Company Div Defense. Government technical data includes 25 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 7 manufacturers, 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
NSN5999-00-900-0591
Primary Part Number5M988-8
Item NameShielding Gasket,electronic
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerThe Boeing Company Div Defense
StatusACTIVE
Aperture Diameter1.250 INCHES NOMINAL IN
Hole Diameter0.203 INCHES NOMINAL IN
Style DesignatorNON-CIRCULAR
Outside Edge to Bolt Hole Center Distance Along Width0.172 INCHES NOMINAL IN
Environmental Protection Material LocationTHROUGHOUT RF SHIELDING GASKET
Cross-Sectional Shape StyleEMI
Outside Edge to Bolt Hole Center Distance Along Length0.172 INCHES NOMINAL IN
Outside Corner Radius0.172 INCHES NOMINAL IN
Cross-Sectional Height0.062 INCHES NOMINAL IN
Center to Center Distance Between Bolt Holes Along Length1.156 INCHES NOMINAL IN
MaterialUNABLE TO DECODE
Bolt Hole Quantity4
Center to Center Distance Between Bolt Holes Along Width1.156 INCHES NOMINAL IN
Criticality Code JustificationFEAT
Aperture Diameter1.250 INCHES NOMINAL IN
Hole Diameter0.203 INCHES NOMINAL IN
Style DesignatorNON-CIRCULAR
Outside Edge to Bolt Hole Center Distance Along Width0.172 INCHES NOMINAL IN
Environmental Protection Material LocationTHROUGHOUT RF SHIELDING GASKET
Cross-Sectional Shape StyleEMI
Outside Edge to Bolt Hole Center Distance Along Length0.172 INCHES NOMINAL IN
Outside Corner Radius0.172 INCHES NOMINAL IN
Cross-Sectional Height0.062 INCHES NOMINAL IN
Center to Center Distance Between Bolt Holes Along Length1.156 INCHES NOMINAL IN
MaterialUNABLE TO DECODE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeZN
Weight0.0300 lbs
Cube0.0018 cu ft
Verified Substitutes 12
5905-00-174-2689 INTERCHANGEABLE
Resistor,fixed,wire Wound
5133-00-189-9319 INTERCHANGEABLE
Drill,twist
4730-00-278-48142D1683 INTERCHANGEABLE
Elbow,pipe
Caterpillar Inc Div Caterpillar Defense
5945-00-581-6872 INTERCHANGEABLE
Relay,electromagnetic
5960-00-941-382073020 INTERCHANGEABLE
Electron Tube
Unison Industries Llc
5330-00-957-8553 INTERCHANGEABLE
Gasket
5325-01-024-234120029 INTERCHANGEABLE
Ring,retaining
Texas Hydraulics, Inc.
5945-01-079-2910 INTERCHANGEABLE
Solenoid,electrical
5120-01-112-484373020 INTERCHANGEABLE
Wrench,torque
Wright Tool Company, Llc
2815-01-118-299237554591 INTERCHANGEABLE
Cover
Perkins Engines Inc
Cross-Reference Index
Part NumberManufacturer
73-020 Metal Textiles Corporation Dba Metal Textiles Div Electronic Shielding Group (USA)
5M988-8 PRIMARY The Boeing Company Div Defense (USA)
73-020 Parker-Hannifin Corporation Dba Pneutronics Div Chomerics Division (USA)
07-0501-0020 Metal Textiles Corporation Dba Metal Textiles Div Electronic Shielding Group (USA)
20029 Morris Services Co (USA)
10-7016 REV C ITEM 41 L3 Technologies, Inc. (USA)
1214-0508 Conductive Systems, Inc. Dba Conductive Systems Inc (USA)
MP9000-591 Majr Products Corp (USA)
07-0501-0020 Parker-Hannifin Corporation Dba Pneutronics Div Chomerics Division (USA)
Related Parts
5905-00-174-2689INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
5133-00-189-9319INTERCHANGEABLE
DRILL,TWIST
4730-00-278-4814INTERCHANGEABLE
ELBOW,PIPE
2D1683
5945-00-581-6872INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5960-00-941-3820INTERCHANGEABLE
ELECTRON TUBE
73020
5330-00-957-8553INTERCHANGEABLE
GASKET
5325-01-024-2341INTERCHANGEABLE
RING,RETAINING
20029
5945-01-079-2910INTERCHANGEABLE
SOLENOID,ELECTRICAL
5120-01-112-4843INTERCHANGEABLE
WRENCH,TORQUE
73020
2815-01-118-2992INTERCHANGEABLE
COVER
37554591
4720-01-171-3857INTERCHANGEABLE
SPRINKLER,SOAKER
4730-01-192-5662INTERCHANGEABLE
PLUG,PIPE
35358373

Frequently Asked Questions

What is NSN 5999-00-900-0591?

NSN 5999-00-900-0591 is a Shielding Gasket,electronic, manufactured by The Boeing Company Div Defense, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-00-900-0591?

NSN 5999-00-900-0591 has 9 cross-referenced part numbers: 73-020 (Metal Textiles Corporation Dba Metal Textiles Div Electronic Shielding Group), 5M988-8 (The Boeing Company Div Defense), 73-020 (Parker-Hannifin Corporation Dba Pneutronics Div Chomerics Division), 07-0501-0020 (Metal Textiles Corporation Dba Metal Textiles Div Electronic Shielding Group), 20029 (Morris Services Co) and 4 more.

What NSN replaces 5999-00-900-0591?

There are 12 known substitutes for 5999-00-900-0591: 5905-00-174-2689, 5133-00-189-9319, 4730-00-278-4814 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5M988-8?

Key specifications for 5M988-8: Aperture Diameter: 1.250 INCHES NOMINAL IN; Hole Diameter: 0.203 INCHES NOMINAL IN; Style Designator: NON-CIRCULAR; Overall Width: 1.500 INCHES NOMINAL IN. 30 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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