PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS21043L04Nut,plain,extended Washer,hexago

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5310-01-479-3842 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-479-3842 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-479-3842. Primary manufacturer part number: MS21043L04.
Features
  • Nut,plain,extended Washer,hexago — FSC 5310
  • Thread Direction: RIGHT-HAND
  • Nut Style: HEXAGON
  • Thread Series: UNJC
  • Nominal Thread Size: 0.112 INCHES IN
  • Criticality Code Justification: AGAV
  • Material: STEEL CORROSION RESISTING OVERALL
  • Washer Thickness: 0.010 INCHES MINIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Nut,plain,extended Washer,hexago, cataloged under National Stock Number 5310-01-479-3842, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 13 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-479-3842
Primary Part NumberMS21043L04
Item NameNut,plain,extended Washer,hexago
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Thread DirectionRIGHT-HAND
Nut StyleHEXAGON
Thread SeriesUNJC
Nominal Thread Size0.112 INCHES IN
Criticality Code JustificationAGAV
MaterialSTEEL CORROSION RESISTING OVERALL
Washer Thickness0.010 INCHES MINIMUM IN
Thread Class3B
Washer Outside Diameter0.206 INCHES NOMINAL IN
Thread Quantity Per Inch40
Temp Rating800.0 FAHRENHEIT MAXIMUM DEGF
Width Across Flats0.150 INCHES MINIMUM AND 0.158 INCHES MAXIMUM IN
LubricationSOLUBLE LUBRICANT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5310-00-878-3292MS21043-04 INTERCHANGEABLE
Nut,self-Locking,extended Washer
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
MS21043L04 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5310-00-878-3292INTERCHANGEABLE
NUT,SELF-LOCKING,EXTENDED WASHER
MS21043-04

Frequently Asked Questions

What is NSN 5310-01-479-3842?

NSN 5310-01-479-3842 is a Nut,plain,extended Washer,hexago, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-479-3842?

NSN 5310-01-479-3842 has 1 cross-referenced part number: MS21043L04 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5310-01-479-3842?

There is 1 known substitute for 5310-01-479-3842: 5310-00-878-3292. Verify interchangeability with system specifications before substitution.

What are the specifications of MS21043L04?

Key specifications for MS21043L04: Thread Direction: RIGHT-HAND; Nut Style: HEXAGON; Thread Series: UNJC; Nominal Thread Size: 0.112 INCHES IN. 15 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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