PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

38633Boot,dust and Moisture Seal

Espey Mfg. & Electronics Corp. · NSN 5930-00-950-4541 · FSC 5930 · No Item Name Available
Verified by PartsTable
NSN 5930-00-950-4541 — this item is cataloged by the U.S. Government under National Stock Number 5930-00-950-4541. Primary manufacturer part number: 38633.
Features
  • Boot,dust and Moisture Seal — FSC 5930
  • Body Outside Diameter: 0.281 INCHES NOMINAL IN
  • Width Across Flats: 0.370 INCHES NOMINAL IN
  • Base Thread Location: INTERNAL
  • Thread Quantity Per Inch: 32
  • Thread Series: UNEF
  • Nominal Thread Size: 0.350 INCHES IN
  • Mounting Method: INTEGRAL THREADED NUT
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Silicone Body construction
General Description

The Boot,dust and Moisture Seal, cataloged under National Stock Number 5930-00-950-4541, is classified within Federal Supply Class 5930 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Espey Mfg. & Electronics Corp.. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5930-00-950-4541
Primary Part Number38633
Item NameBoot,dust and Moisture Seal
FSC / FSG5930 / 59 — No Item Name Available
ManufacturerEspey Mfg. & Electronics Corp.
StatusCANCELLED
Body Outside Diameter0.281 INCHES NOMINAL IN
Width Across Flats0.370 INCHES NOMINAL IN
Base Thread LocationINTERNAL
Thread Quantity Per Inch32
Thread SeriesUNEF
Nominal Thread Size0.350 INCHES IN
Mounting MethodINTEGRAL THREADED NUT
MaterialRUBBER SILICONE BODY
Sealing MethodCOMPRESSION
Thread Class2B
Thread Length0.072 INCHES NOMINAL IN
Mounting Device Quantity1
Test Data Document81349-MIL-B-5423 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Body Height0.327 INCHES NOMINAL IN
Style DesignatorCLOSED END
Hazardous Locations/environmental ProtectionDUSTPROOF-NEMA TYPE 13 AND WATERTIGHT-NEMA TYPE 4
Base Height0.072 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
3110-00-100-05560042887-0 INTERCHANGEABLE
Cup,tapered Roller Bearing
New Holland Construction
5905-00-104-8330 INTERCHANGEABLE
Resistor,fixed,composition
3030-00-160-8285A27 INTERCHANGEABLE
Belt,v
Contitech Usa, Inc Dba Veyance Technologies
5340-00-370-84464008-2 INTERCHANGEABLE
Clevis,rod End
Avox Systems Inc Dba Avox Systems Inc
5930-00-442-5701 INTERCHANGEABLE
Boot,dust and Moisture Seal
5895-00-484-1496M40082-6 INTERCHANGEABLE
Control,recorder
Crown Audio, Inc. Dba Crown International
5355-00-510-4494 INTERCHANGEABLE
Knob
5930-00-539-7013 INTERCHANGEABLE
Boot,dust and Moisture Seal
5930-00-687-0948 INTERCHANGEABLE
Boot,dust and Moisture Seal
4730-00-793-28214LF2316 INTERCHANGEABLE
Elbow,pipe to Tube
Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok
Cross-Reference Index
Part NumberManufacturer
38633 Espey Mfg. & Electronics Corp. (USA)
M5423-/10-10 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-5423 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M5423/10-01 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M5423/10-01 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MILB5423-10 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
334-2035-010 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
M1LB5423-10 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
266-3187-000 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
MIL-DTL-5423/10 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
40082 Multi-Flex Seals Inc (USA)
N5040G Apm Hexseal Corp (USA)
Related Parts
3110-00-100-0556INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
0042887-0
5905-00-104-8330INTERCHANGEABLE
RESISTOR,FIXED,COMPOSITION
3030-00-160-8285INTERCHANGEABLE
BELT,V
A27
5340-00-370-8446INTERCHANGEABLE
CLEVIS,ROD END
4008-2
5930-00-442-5701INTERCHANGEABLE
BOOT,DUST AND MOISTURE SEAL
5895-00-484-1496INTERCHANGEABLE
CONTROL,RECORDER
M40082-6
5355-00-510-4494INTERCHANGEABLE
KNOB
5930-00-539-7013INTERCHANGEABLE
BOOT,DUST AND MOISTURE SEAL
5930-00-687-0948INTERCHANGEABLE
BOOT,DUST AND MOISTURE SEAL
4730-00-793-2821INTERCHANGEABLE
ELBOW,PIPE TO TUBE
4LF2316
5850-00-872-1568INTERCHANGEABLE
TRANSMITTING SET,INFRARED
40082
5930-00-893-1928INTERCHANGEABLE
BOOT,DUST AND MOISTURE SEAL

Frequently Asked Questions

What is NSN 5930-00-950-4541?

NSN 5930-00-950-4541 is a Boot,dust and Moisture Seal, manufactured by Espey Mfg. & Electronics Corp., classified under FSC 5930 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5930-00-950-4541?

NSN 5930-00-950-4541 has 12 cross-referenced part numbers: 38633 (Espey Mfg. & Electronics Corp.), M5423-/10-10 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-5423 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M5423/10-01 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M5423/10-01 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M) and 7 more.

What NSN replaces 5930-00-950-4541?

There are 12 known substitutes for 5930-00-950-4541: 3110-00-100-0556, 5905-00-104-8330, 3030-00-160-8285 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 38633?

Key specifications for 38633: Body Outside Diameter: 0.281 INCHES NOMINAL IN; Width Across Flats: 0.370 INCHES NOMINAL IN; Base Thread Location: INTERNAL; Thread Quantity Per Inch: 32. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5930-00-950-4541 still in active supply?

NSN 5930-00-950-4541 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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