PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-B-5423/9Boot,dust and Moisture Seal

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5930-00-982-9261 · FSC 5930 · No Item Name Available
Verified by PartsTable
NSN 5930-00-982-9261 — this item is cataloged by the U.S. Government under National Stock Number 5930-00-982-9261. Primary manufacturer part number: MIL-B-5423/9.
Features
  • Boot,dust and Moisture Seal — FSC 5930
  • Material Document and Classification: ZZ-R-765,CLASS 3,GRADE 60 FED SPEC SINGLE MATERIAL RESPONSE BODY
  • Opening Inside Diameter: 0.250 INCHES NOMINAL IN
  • Thread Series: UNEF
  • Thread Class: 2B
  • Material: RUBBER SILICONE BODY
  • Nominal Thread Size: 0.375 INCHES IN
  • Nondefinitive Spec/std Data: 2 SIZE AND C TYPE
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 5930-00-982-9261, 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 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 12 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.

Technical Specifications
ParameterValue
NSN5930-00-982-9261
Primary Part NumberMIL-B-5423/9
Item NameBoot,dust and Moisture Seal
FSC / FSG5930 / 59 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Material Document and ClassificationZZ-R-765,CLASS 3,GRADE 60 FED SPEC SINGLE MATERIAL RESPONSE BODY
Opening Inside Diameter0.250 INCHES NOMINAL IN
Thread SeriesUNEF
Thread Class2B
MaterialRUBBER SILICONE BODY
Nominal Thread Size0.375 INCHES IN
Nondefinitive Spec/std Data2 SIZE AND C TYPE
Style DesignatorTHRU-HOLE
Width Across Flats0.500 INCHES NOMINAL IN
Mounting MethodINTEGRAL THREADED NUT
Base Thread LocationINTERNAL
Thread Length0.175 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5930-00-140-3241 INTERCHANGEABLE
Boot,dust and Moisture Seal
5930-00-402-1021 INTERCHANGEABLE
Boot,dust and Moisture Seal
5930-00-491-8714 INTERCHANGEABLE
Boot,dust and Moisture Seal
5930-00-496-7492N9060X1/4 INTERCHANGEABLE
Boot,dust and Moisture Seal
Apm Hexseal Corp
5930-00-816-6119 INTERCHANGEABLE
Boot,dust and Moisture Seal
5930-00-823-0482 INTERCHANGEABLE
Boot,dust and Moisture Seal
5930-00-823-0573 INTERCHANGEABLE
Boot,dust and Moisture Seal
5930-00-892-9026N9040 1-8 INTERCHANGEABLE
Boot,dust and Moisture Seal
Apm Hexseal Corp
5930-00-904-5904 INTERCHANGEABLE
Boot,dust and Moisture Seal
5930-00-987-8829 INTERCHANGEABLE
Boot,dust and Moisture Seal
Cross-Reference Index
Part NumberManufacturer
MIL-B-5423/9 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-5423/9 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILB54239TYCSZ2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
616687-4 Naval Air Warfare Center Aircraft Division Joint Base Jbmdl (USA)
611R877H98 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
Related Parts
5930-00-140-3241INTERCHANGEABLE
BOOT,DUST AND MOISTURE SEAL
5930-00-402-1021INTERCHANGEABLE
BOOT,DUST AND MOISTURE SEAL
5930-00-491-8714INTERCHANGEABLE
BOOT,DUST AND MOISTURE SEAL
5930-00-496-7492INTERCHANGEABLE
BOOT,DUST AND MOISTURE SEAL
N9060X1/4
5930-00-816-6119INTERCHANGEABLE
BOOT,DUST AND MOISTURE SEAL
5930-00-823-0482INTERCHANGEABLE
BOOT,DUST AND MOISTURE SEAL
5930-00-823-0573INTERCHANGEABLE
BOOT,DUST AND MOISTURE SEAL
5930-00-892-9026INTERCHANGEABLE
BOOT,DUST AND MOISTURE SEAL
N9040 1-8
5930-00-904-5904INTERCHANGEABLE
BOOT,DUST AND MOISTURE SEAL
5930-00-987-8829INTERCHANGEABLE
BOOT,DUST AND MOISTURE SEAL
5930-01-154-0858INTERCHANGEABLE
BOOT,DUST AND MOISTURE SEAL
5340-01-294-8185INTERCHANGEABLE
HANDLE,BOW
6166874

Frequently Asked Questions

What is NSN 5930-00-982-9261?

NSN 5930-00-982-9261 is a Boot,dust and Moisture Seal, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5930 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5930-00-982-9261?

NSN 5930-00-982-9261 has 5 cross-referenced part numbers: MIL-B-5423/9 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-5423/9 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILB54239TYCSZ2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 616687-4 (Naval Air Warfare Center Aircraft Division Joint Base Jbmdl), 611R877H98 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp).

What NSN replaces 5930-00-982-9261?

There are 12 known substitutes for 5930-00-982-9261: 5930-00-140-3241, 5930-00-402-1021, 5930-00-491-8714 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-B-5423/9?

Key specifications for MIL-B-5423/9: Material Document and Classification: ZZ-R-765,CLASS 3,GRADE 60 FED SPEC SINGLE MATERIAL RESPONSE BODY; Opening Inside Diameter: 0.250 INCHES NOMINAL IN; Overall Height: 0.242 INCHES NOMINAL IN; Thread Series: UNEF. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5930-00-982-9261 still in active supply?

NSN 5930-00-982-9261 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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