PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS20365-428Nut,self-Locking,hexagon

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5310-00-515-8052 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-515-8052 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-515-8052. Primary manufacturer part number: MS20365-428.
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • Temp Rating: 250.0 FAHRENHEIT NOMINAL DEGF
  • Nominal Thread Size: 0.250 INCHES IN
  • Bearing Surface Type: FLAT
  • Width Across Flats: 0.438 INCHES NOMINAL IN
  • Material: STEEL OVERALL
  • Surface Treatment: CADMIUM OR ZINC OVERALL
  • Nut Style: HEXAGON
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-00-515-8052, 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 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: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-515-8052
Primary Part NumberMS20365-428
Item NameNut,self-Locking,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Temp Rating250.0 FAHRENHEIT NOMINAL DEGF
Nominal Thread Size0.250 INCHES IN
Bearing Surface TypeFLAT
Width Across Flats0.438 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Surface TreatmentCADMIUM OR ZINC OVERALL
Nut StyleHEXAGON
Thread SeriesUNF
Thread DirectionRIGHT-HAND
Thread Quantity Per Inch28
Thread Class3B
Nut Height0.312 INCHES NOMINAL IN
Locking FeaturePREVAILING TORQUE ALL METAL DESIGN OR PREVAILING TORQUE WITH NONMETALLIC INSERT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
5310-00-877-5796MS21044N4 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
MS20365-428 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS20365-428 Leonardo Uk Ltd (GBR)
Related Parts
5310-00-877-5796INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
MS21044N4

Frequently Asked Questions

What is NSN 5310-00-515-8052?

NSN 5310-00-515-8052 is a Nut,self-Locking,hexagon, 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: cancelled.

What are the part numbers for NSN 5310-00-515-8052?

NSN 5310-00-515-8052 has 2 cross-referenced part numbers: MS20365-428 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS20365-428 (Leonardo Uk Ltd).

What NSN replaces 5310-00-515-8052?

There is 1 known substitute for 5310-00-515-8052: 5310-00-877-5796. Verify interchangeability with system specifications before substitution.

What are the specifications of MS20365-428?

Key specifications for MS20365-428: Temp Rating: 250.0 FAHRENHEIT NOMINAL DEGF; Nominal Thread Size: 0.250 INCHES IN; Bearing Surface Type: FLAT; Width Across Flats: 0.438 INCHES NOMINAL IN. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-515-8052 still in active supply?

NSN 5310-00-515-8052 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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