PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

NAS1021N04Nut,self-Locking,hexagon

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5310-00-660-3389 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-660-3389 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-660-3389. Primary manufacturer part number: NAS1021N04.
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • Thread Quantity Per Inch: 40
  • Material: STEEL NUT
  • Surface Treatment: CADMIUM NUT
  • Material: PLASTIC POLYAMIDE NYLON LOCKING INSERT
  • Temp Rating: 250.0 FAHRENHEIT NOMINAL DEGF
  • Nominal Thread Size: 0.112 INCHES IN
  • Nut Height: 0.157 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Nut construction
General Description

The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-00-660-3389, 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 12 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-660-3389
Primary Part NumberNAS1021N04
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
Thread Quantity Per Inch40
MaterialSTEEL NUT
Surface TreatmentCADMIUM NUT
MaterialPLASTIC POLYAMIDE NYLON LOCKING INSERT
Temp Rating250.0 FAHRENHEIT NOMINAL DEGF
Nominal Thread Size0.112 INCHES IN
Nut Height0.157 INCHES NOMINAL IN
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Thread Class3B
Width Across Flats0.240 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
Locking FeaturePREVAILING TORQUE WITH NONMETALLIC INSERT
Thread DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5310-00-088-0551MS21044N04 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
NAS1021N04 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
MILN25027 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5310-00-088-0551INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
MS21044N04

Frequently Asked Questions

What is NSN 5310-00-660-3389?

NSN 5310-00-660-3389 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 5310-00-660-3389?

NSN 5310-00-660-3389 has 2 cross-referenced part numbers: NAS1021N04 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), MILN25027 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5310-00-660-3389?

There is 1 known substitute for 5310-00-660-3389: 5310-00-088-0551. Verify interchangeability with system specifications before substitution.

What are the specifications of NAS1021N04?

Key specifications for NAS1021N04: Thread Quantity Per Inch: 40; Material: STEEL NUT; Surface Treatment: CADMIUM NUT; Material: PLASTIC POLYAMIDE NYLON LOCKING INSERT. 12 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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