PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

79NTU120Nut,self-Locking,hexagon

Harvard Industries Inc · NSN 5310-00-584-7993 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-584-7993 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-584-7993. Primary manufacturer part number: 79NTU120.
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • Surface Treatment: PASSIVATE NUT
  • Thread Quantity Per Inch: 10
  • Nominal Thread Size: 0.750 INCHES IN
  • Nut Style: HEXAGON
  • Thread Direction: RIGHT-HAND
  • Width Across Flats: 1.231 INCHES MINIMUM AND 1.255 INCHES MAXIMUM IN
  • Thread Class: 3B
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Corrosion Resisting Nut construction
General Description

The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-00-584-7993, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Harvard Industries Inc. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-584-7993
Primary Part Number79NTU120
Item NameNut,self-Locking,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerHarvard Industries Inc
StatusACTIVE
Surface TreatmentPASSIVATE NUT
Thread Quantity Per Inch10
Nominal Thread Size0.750 INCHES IN
Nut StyleHEXAGON
Thread DirectionRIGHT-HAND
Width Across Flats1.231 INCHES MINIMUM AND 1.255 INCHES MAXIMUM IN
Thread Class3B
MaterialSTEEL CORROSION RESISTING NUT
Nut Height0.688 INCHES MINIMUM AND 0.718 INCHES MAXIMUM IN
MaterialPLASTIC POLYAMIDE NYLON LOCKING INSERT
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Locking FeaturePREVAILING TORQUE WITH NONMETALLIC INSERT
Temp Rating250.0 FAHRENHEIT NOMINAL DEGF
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
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
5310-00-727-522379NTU040 INTERCHANGEABLE
Nut,self-Locking,hexagon
Esna, Llc
5310-00-836-4310 INTERCHANGEABLE
Nut,self-Locking,hexagon
Cross-Reference Index
Part NumberManufacturer
79NTU120 Harvard Industries Inc (USA)
M24129-4-12C Military Specifications Promulgated by Military Departments/agencies 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
MS16228-7 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5310-00-584-7990INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-00-584-7991INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-00-584-7992INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-00-727-5223INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
79NTU040
5310-00-836-4310INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON

Frequently Asked Questions

What is NSN 5310-00-584-7993?

NSN 5310-00-584-7993 is a Nut,self-Locking,hexagon, manufactured by Harvard Industries Inc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-584-7993?

NSN 5310-00-584-7993 has 4 cross-referenced part numbers: 79NTU120 (Harvard Industries Inc), M24129-4-12C (Military Specifications Promulgated by Military Departments/agencies 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), MS16228-7 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5310-00-584-7993?

There are 5 known substitutes for 5310-00-584-7993: 5310-00-584-7990, 5310-00-584-7991, 5310-00-584-7992 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 79NTU120?

Key specifications for 79NTU120: Surface Treatment: PASSIVATE NUT; Thread Quantity Per Inch: 10; Nominal Thread Size: 0.750 INCHES IN; Nut Style: HEXAGON. 13 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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