PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

79NTU040Nut,self-Locking,hexagon

Esna, Llc · NSN 5310-00-727-5223 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-727-5223 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-727-5223. Primary manufacturer part number: 79NTU040.
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • Surface Treatment: PASSIVATE NUT
  • Material: PLASTIC POLYAMIDE NYLON LOCKING INSERT
  • Material: STEEL CORROSION RESISTING NUT
  • Nominal Thread Size: 0.250 INCHES IN
  • Nut Height: 0.266 INCHES MINIMUM AND 0.296 INCHES MAXIMUM IN
  • Thread Series: UNIFIED NATIONAL COARSE (UNC)
  • Locking Feature: PREVAILING TORQUE WITH NONMETALLIC INSERT
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Plastic Polyamide Nylon Locking Insert construction
General Description

The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-00-727-5223, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Esna, Llc. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-727-5223
Primary Part Number79NTU040
Item NameNut,self-Locking,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerEsna, Llc
StatusCANCELLED
Surface TreatmentPASSIVATE NUT
MaterialPLASTIC POLYAMIDE NYLON LOCKING INSERT
MaterialSTEEL CORROSION RESISTING NUT
Nominal Thread Size0.250 INCHES IN
Nut Height0.266 INCHES MINIMUM AND 0.296 INCHES MAXIMUM IN
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Locking FeaturePREVAILING TORQUE WITH NONMETALLIC INSERT
Thread Class3B
Nut StyleHEXAGON
Width Across Flats0.489 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN
Thread Quantity Per Inch20
Temp Rating250.0 FAHRENHEIT NOMINAL DEGF
Thread DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 11
5310-00-208-45432325 INTERCHANGEABLE
Nut,self-Locking,hexagon
Upright Inc
5310-00-245-8825MS16228-4C INTERCHANGEABLE
Nut,self-Locking,hexagon
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5310-00-584-7990 INTERCHANGEABLE
Nut,self-Locking,hexagon
5310-00-584-7991 INTERCHANGEABLE
Nut,self-Locking,hexagon
5310-00-584-7992 INTERCHANGEABLE
Nut,self-Locking,hexagon
5310-00-584-7993 INTERCHANGEABLE
Nut,self-Locking,hexagon
5310-00-836-4310 INTERCHANGEABLE
Nut,self-Locking,hexagon
5310-01-645-2762 INTERCHANGEABLE
Nut,self-Locking,hexagon
5310-01-672-6277 INTERCHANGEABLE
Nut,self-Locking,hexagon
5310-01-709-2027MS16228-4C INTERCHANGEABLE
Nut,plain,hexagon
Insitu, Inc.
Cross-Reference Index
Part NumberManufacturer
79NTU040 PRIMARY Esna, Llc (USA)
79NU040 Zf Industrieantriebe Witten Gmbh (DEU)
79NTU040 Harvard Industries Inc (USA)
MS16228-4C PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
MS16228-4C Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
T8004943-5 General Dynamics Defense Systems Inc. Dba General Dynamics Advanced Information Systems (USA)
MS16228-1 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MILN24129-4 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M24129-4-4C Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
T8004943-5 Zf Industrieantriebe Witten Gmbh (DEU)
298538P5 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
Related Parts
5310-00-208-4543INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
2325
5310-00-245-8825INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
MS16228-4C
5310-00-584-7990INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-00-584-7991INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-00-584-7992INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-00-584-7993INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-00-836-4310INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-01-645-2762INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-01-672-6277INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-01-709-2027INTERCHANGEABLE
NUT,PLAIN,HEXAGON
MS16228-4C
5310-01-729-2626INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
MS16228-4C

Frequently Asked Questions

What is NSN 5310-00-727-5223?

NSN 5310-00-727-5223 is a Nut,self-Locking,hexagon, manufactured by Esna, Llc, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-727-5223?

NSN 5310-00-727-5223 has 11 cross-referenced part numbers: 79NTU040 (Esna, Llc), 79NU040 (Zf Industrieantriebe Witten Gmbh), 79NTU040 (Harvard Industries Inc), MS16228-4C (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), MS16228-4C (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M) and 6 more.

What NSN replaces 5310-00-727-5223?

There are 11 known substitutes for 5310-00-727-5223: 5310-00-208-4543, 5310-00-245-8825, 5310-00-584-7990 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 79NTU040?

Key specifications for 79NTU040: Surface Treatment: PASSIVATE NUT; Material: PLASTIC POLYAMIDE NYLON LOCKING INSERT; Material: STEEL CORROSION RESISTING NUT; Nominal Thread Size: 0.250 INCHES IN. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-727-5223 still in active supply?

NSN 5310-00-727-5223 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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