PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40174Shielding Gasket,electronic

Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit · NSN 5999-01-371-5284 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-371-5284 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-371-5284. Primary manufacturer part number: 40174.
Features
  • Shielding Gasket,electronic — FSC 5999
  • Surface Treatment Document and Classification: UNABLE TO DECODE
  • Bolt Hole Quantity: 4
  • Surface Treatment: UNABLE TO DECODE
  • Environmental Protection Material Location: THROUGHOUT RF SHIELDING GASKET
  • Cross-Sectional Height: 0.037 INCHES MINIMUM AND 0.057 INCHES MAXIMUM IN
  • Aperture Diameter: 1.432 INCHES MINIMUM AND 1.447 INCHES MAXIMUM IN
  • Hole Diameter: 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Shielding Gasket,electronic, cataloged under National Stock Number 5999-01-371-5284, 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 Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit. Government technical data includes 18 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-01-371-5284
Primary Part Number40174
Item NameShielding Gasket,electronic
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerTransistor Devices Inc Div Astrodyne Tdi High Power Business Unit
StatusACTIVE
Surface Treatment Document and ClassificationUNABLE TO DECODE
Bolt Hole Quantity4
Surface TreatmentUNABLE TO DECODE
Environmental Protection Material LocationTHROUGHOUT RF SHIELDING GASKET
Cross-Sectional Height0.037 INCHES MINIMUM AND 0.057 INCHES MAXIMUM IN
Aperture Diameter1.432 INCHES MINIMUM AND 1.447 INCHES MAXIMUM IN
Hole Diameter0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
Style DesignatorNON-CIRCULAR
Cross-Sectional Shape StyleEMI
Surface Treatment Document and ClassificationUNABLE TO DECODE
Bolt Hole Quantity4
Surface TreatmentUNABLE TO DECODE
Environmental Protection Material LocationTHROUGHOUT RF SHIELDING GASKET
Cross-Sectional Height0.037 INCHES MINIMUM AND 0.057 INCHES MAXIMUM IN
Aperture Diameter1.432 INCHES MINIMUM AND 1.447 INCHES MAXIMUM IN
Hole Diameter0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
Style DesignatorNON-CIRCULAR
Cross-Sectional Shape StyleEMI
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code9
Criticality CodeN
Unit of IssueEA
SMR CodeJN
Verified Substitutes 12
3110-00-156-470411776-13 INTERCHANGEABLE
Bearing,ball,annular
Calgon Carbon Uv Technologies Llc Dba Hyde Marine
5340-00-598-2804GS17-110 INTERCHANGEABLE
Catch,elbow
L3harris Technologies, Inc Div Space & Airborne Systems
5330-00-649-913140174F INTERCHANGEABLE
Gasket
Griswold Industries Dba Cla-Val Co
5330-00-842-8250CA3960 INTERCHANGEABLE
Gasket
Stillman Seal Corporation Div Stillman Seal Corperation
5975-01-095-9429 INTERCHANGEABLE
Panel,blank
4820-01-315-259840174-401 INTERCHANGEABLE
Valve,regulating,temperature
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
5820-01-329-5368 INTERCHANGEABLE
Standard Front Whee
5315-01-349-280740174 INTERCHANGEABLE
Pin,straight,headless
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
4820-01-408-018340174-101 INTERCHANGEABLE
Valve,regulating,temperature
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
5310-01-557-083640174 INTERCHANGEABLE
Nut,plain,hexagon
Fastenal Company Dba Fastenal Co
Cross-Reference Index
Part NumberManufacturer
ESSCG-B-16-0 Spira Manufacturing Corporation Dba Spira Manufacturing Corp (USA)
40174 PRIMARY Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit (USA)
Related Parts
3110-00-156-4704INTERCHANGEABLE
BEARING,BALL,ANNULAR
11776-13
5340-00-598-2804INTERCHANGEABLE
CATCH,ELBOW
GS17-110
5330-00-649-9131INTERCHANGEABLE
GASKET
40174F
5330-00-842-8250INTERCHANGEABLE
GASKET
CA3960
5975-01-095-9429INTERCHANGEABLE
PANEL,BLANK
4820-01-315-2598INTERCHANGEABLE
VALVE,REGULATING,TEMPERATURE
40174-401
5820-01-329-5368INTERCHANGEABLE
STANDARD FRONT WHEE
5315-01-349-2807INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
40174
4820-01-408-0183INTERCHANGEABLE
VALVE,REGULATING,TEMPERATURE
40174-101
5310-01-557-0836INTERCHANGEABLE
NUT,PLAIN,HEXAGON
40174
7520-01-570-6728INTERCHANGEABLE
PEN,BALL-POINT
SX-210 JETSTREAMBLUE
5340-01-609-0394INTERCHANGEABLE
CAP-PLUG,PROTECTIVE,DUST AND MOI
40174

Frequently Asked Questions

What is NSN 5999-01-371-5284?

NSN 5999-01-371-5284 is a Shielding Gasket,electronic, manufactured by Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-01-371-5284?

NSN 5999-01-371-5284 has 2 cross-referenced part numbers: ESSCG-B-16-0 (Spira Manufacturing Corporation Dba Spira Manufacturing Corp), 40174 (Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit).

What NSN replaces 5999-01-371-5284?

There are 12 known substitutes for 5999-01-371-5284: 3110-00-156-4704, 5340-00-598-2804, 5330-00-649-9131 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40174?

Key specifications for 40174: Surface Treatment Document and Classification: UNABLE TO DECODE; Bolt Hole Quantity: 4; Surface Treatment: UNABLE TO DECODE; Environmental Protection Material Location: THROUGHOUT RF SHIELDING GASKET. 22 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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