PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

NH3030Boot,dust and Moisture Seal

Apm Hexseal Corp · NSN 5340-00-636-4904 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-636-4904 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-636-4904. Primary manufacturer part number: NH3030.
Features
  • Boot,dust and Moisture Seal — FSC 5340
  • Dome Height: 0.281 INCHES NOMINAL IN
  • Sealing Method: MECHANICAL
  • Nominal Thread Size: 0.500 INCHES IN
  • Width Across Flats: 0.750 INCHES NOMINAL IN
  • Thread Quantity Per Inch: 32
  • Mounting Method: THREAD
  • Base Thread Location: INTERNAL
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Silicone Insulator construction
General Description

The Boot,dust and Moisture Seal, cataloged under National Stock Number 5340-00-636-4904, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Apm Hexseal Corp. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-636-4904
Primary Part NumberNH3030
Item NameBoot,dust and Moisture Seal
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerApm Hexseal Corp
StatusCANCELLED
Dome Height0.281 INCHES NOMINAL IN
Sealing MethodMECHANICAL
Nominal Thread Size0.500 INCHES IN
Width Across Flats0.750 INCHES NOMINAL IN
Thread Quantity Per Inch32
Mounting MethodTHREAD
Base Thread LocationINTERNAL
Thread SeriesUNS
Opening Inside Diameter0.422 INCHES NOMINAL IN
Mounting Device Quantity1
Style DesignatorCLOSED END
Thread Class2A A
MaterialRUBBER SILICONE INSULATOR
Thread Length0.176 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Unit of IssueEA
Verified Substitutes 12
5340-01-562-699212216 SUCCESSOR
Bracket,double Angle
Bae Systems Information & Electronic Systems Integration Inc.
5133-00-189-9261 INTERCHANGEABLE
Drill,twist
5133-00-228-1332 INTERCHANGEABLE
Drill,twist
5340-00-253-71631088823-2 INTERCHANGEABLE
Boot,dust and Moisture Seal
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5950-00-340-314612216 INTERCHANGEABLE
Transformer,power
Standex Electronics, Inc.
5330-00-361-0661 INTERCHANGEABLE
Gasket
5355-00-483-986512216 INTERCHANGEABLE
Knob
Aerosonic Llc
5910-00-542-747420630-44 INTERCHANGEABLE
Shield,capacitor
Cornell-Dubilier Marketing Inc
5305-00-887-156412216 INTERCHANGEABLE
Setscrew
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
5961-01-193-8320 INTERCHANGEABLE
Semiconductor Device,diode
Cross-Reference Index
Part NumberManufacturer
N2562-43548 Naval Air Warfare Center Aircraft Division Joint Base Jbmdl (USA)
H3030 Apm Hexseal Corp (USA)
1221-6 Apm Hexseal Corp (USA)
9000S6202-74056PC15 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
NH3030 PRIMARY Apm Hexseal Corp (USA)
Related Parts
5340-01-562-6992SUCCESSOR
BRACKET,DOUBLE ANGLE
12216
5133-00-189-9261INTERCHANGEABLE
DRILL,TWIST
5133-00-228-1332INTERCHANGEABLE
DRILL,TWIST
5340-00-253-7163INTERCHANGEABLE
BOOT,DUST AND MOISTURE SEAL
1088823-2
5950-00-340-3146INTERCHANGEABLE
TRANSFORMER,POWER
12216
5330-00-361-0661INTERCHANGEABLE
GASKET
5355-00-483-9865INTERCHANGEABLE
KNOB
12216
5910-00-542-7474INTERCHANGEABLE
SHIELD,CAPACITOR
20630-44
5305-00-887-1564INTERCHANGEABLE
SETSCREW
12216
5961-01-193-8320INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
3455-01-203-7451INTERCHANGEABLE
TREPANNING TOOL,MACHINE
12216
5120-01-335-0802INTERCHANGEABLE
SOCKET,SOCKET WRENCH

Frequently Asked Questions

What is NSN 5340-00-636-4904?

NSN 5340-00-636-4904 is a Boot,dust and Moisture Seal, manufactured by Apm Hexseal Corp, classified under FSC 5340 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5340-00-636-4904?

NSN 5340-00-636-4904 has 5 cross-referenced part numbers: N2562-43548 (Naval Air Warfare Center Aircraft Division Joint Base Jbmdl), H3030 (Apm Hexseal Corp), 1221-6 (Apm Hexseal Corp), 9000S6202-74056PC15 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), NH3030 (Apm Hexseal Corp).

What NSN replaces 5340-00-636-4904?

There are 12 known substitutes for 5340-00-636-4904: 5340-01-562-6992, 5133-00-189-9261, 5133-00-228-1332 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of NH3030?

Key specifications for NH3030: Dome Height: 0.281 INCHES NOMINAL IN; Sealing Method: MECHANICAL; Nominal Thread Size: 0.500 INCHES IN; Width Across Flats: 0.750 INCHES NOMINAL IN. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5340-00-636-4904 still in active supply?

NSN 5340-00-636-4904 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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