PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS21044-3Nut,self-Locking,hexagon

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5310-01-352-3340 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-352-3340 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-352-3340. Primary manufacturer part number: MS21044-3.
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • Material: ALUMINUM ALLOY OR STEEL OR COPPER ALLOY LOCKING INSERT
  • Nut Style: HEXAGON
  • Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF)
  • Nut Height: 0.208 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
  • Width Across Flats: 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
  • Thread Quantity Per Inch: 32
  • Nominal Thread Size: 0.190 INCHES IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Aluminum Alloy or Steel or Copper Alloy Locking Insert construction
General Description

The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-352-3340, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, 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
NSN5310-01-352-3340
Primary Part NumberMS21044-3
Item NameNut,self-Locking,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNational Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
StatusACTIVE
MaterialALUMINUM ALLOY OR STEEL OR COPPER ALLOY LOCKING INSERT
Nut StyleHEXAGON
Thread SeriesUNIFIED NATIONAL JOINT FINE (UNJF)
Nut Height0.208 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
Width Across Flats0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
Thread Quantity Per Inch32
Nominal Thread Size0.190 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5310-00-208-9255MS21044C3 INTERCHANGEABLE
Nut,self-Locking,hexagon
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5310-00-877-5797MS21044N3 INTERCHANGEABLE
Nut,self-Locking,hexagon
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
MS21044-3 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
MS21044-3 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5310-00-208-9255INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
MS21044C3
5310-00-877-5797INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
MS21044N3

Frequently Asked Questions

What is NSN 5310-01-352-3340?

NSN 5310-01-352-3340 is a Nut,self-Locking,hexagon, manufactured by National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-352-3340?

NSN 5310-01-352-3340 has 2 cross-referenced part numbers: MS21044-3 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), MS21044-3 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5310-01-352-3340?

There are 2 known substitutes for 5310-01-352-3340: 5310-00-208-9255, 5310-00-877-5797. Verify interchangeability with system specifications before substitution.

What are the specifications of MS21044-3?

Key specifications for MS21044-3: Material: ALUMINUM ALLOY OR STEEL OR COPPER ALLOY LOCKING INSERT; Nut Style: HEXAGON; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Nut Height: 0.208 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN. 7 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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