PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M5423/09-09Boot,dust and Moisture Seal

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5930-01-377-9978 · FSC 5930 · No Item Name Available
Verified by PartsTable
NSN 5930-01-377-9978 — this item is cataloged by the U.S. Government under National Stock Number 5930-01-377-9978. Primary manufacturer part number: M5423/09-09.
Features
  • Boot,dust and Moisture Seal — FSC 5930
  • Criticality Code Justification: ZZZW
  • Departure From Cited Document: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
  • 1 verified cross-reference
  • Primary manufacturer: Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Boot,dust and Moisture Seal, cataloged under National Stock Number 5930-01-377-9978, 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 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5930-01-377-9978
Primary Part NumberM5423/09-09
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
StatusACTIVE
Criticality Code JustificationZZZW
Departure From Cited DocumentMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5930-00-140-3241 INTERCHANGEABLE
Boot,dust and Moisture Seal
5330-01-098-0350M5423/09-09 INTERCHANGEABLE
Seal,special
Northrop Grumman Systems Corporation
Cross-Reference Index
Part NumberManufacturer
M5423/09-09 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5930-00-140-3241INTERCHANGEABLE
BOOT,DUST AND MOISTURE SEAL
5330-01-098-0350INTERCHANGEABLE
SEAL,SPECIAL
M5423/09-09

Frequently Asked Questions

What is NSN 5930-01-377-9978?

NSN 5930-01-377-9978 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: active.

What are the part numbers for NSN 5930-01-377-9978?

NSN 5930-01-377-9978 has 1 cross-referenced part number: M5423/09-09 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5930-01-377-9978?

There are 2 known substitutes for 5930-01-377-9978: 5930-00-140-3241, 5330-01-098-0350. Verify interchangeability with system specifications before substitution.

What are the specifications of M5423/09-09?

Key specifications for M5423/09-09: Criticality Code Justification: ZZZW; Departure From Cited Document: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS. 2 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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