PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS21060L4Nut,self-Locking,plate

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5310-00-779-6689 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-779-6689 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-779-6689. Primary manufacturer part number: MS21060L4.
Features
  • Nut,self-Locking,plate — FSC 5310
  • Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF)
  • Nut Style: PLATE
  • Plate Thickness: 0.032 INCHES MAXIMUM IN
  • Nut Length: 1.292 INCHES MAXIMUM IN
  • Nominal Thread Size: 0.250 INCHES IN
  • Temp Rating: 450.0 FAHRENHEIT NOMINAL DEGF
  • Nut Mounting Provision: STRAIGHT HOLES
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Iron Alloy 660 Overall construction
General Description

The Nut,self-Locking,plate, cataloged under National Stock Number 5310-00-779-6689, 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 23 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-779-6689
Primary Part NumberMS21060L4
Item NameNut,self-Locking,plate
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNational Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
StatusCANCELLED
Thread SeriesUNIFIED NATIONAL JOINT FINE (UNJF)
Nut StylePLATE
Plate Thickness0.032 INCHES MAXIMUM IN
Nut Length1.292 INCHES MAXIMUM IN
Nominal Thread Size0.250 INCHES IN
Temp Rating450.0 FAHRENHEIT NOMINAL DEGF
Nut Mounting ProvisionSTRAIGHT HOLES
Mounting Hole Diameter0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
Material Document and ClassificationAMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Thread Class3B
Thread Quantity Per Inch28
Surface TreatmentPASSIVATE OVERALL
Center to Center Distance Between Mounting Holes Along Length0.998 INCHES MINIMUM AND 1.002 INCHES MAXIMUM IN
Mounting Hole Arrangement Style2 HOLES
Distance From Aperture Center to Mounting Hole Center0.500 INCHES NOMINAL IN
Features ProvidedFLOATING NUT
Nut Height0.281 INCHES MAXIMUM IN
MaterialIRON ALLOY 660 OVERALL
Thread DirectionRIGHT-HAND
Locking FeaturePREVAILING TORQUE ALL METAL DESIGN
Plate Width0.350 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN
LubricationDRY FILM LUBRICANT
Hardness Rating49.0 ROCKWELL C MAXIMUM
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5310-00-800-6176F5001-4 INTERCHANGEABLE
Nut,self-Locking,plate
Howmet Global Fastening Systems Inc
2530-00-967-0691F50014 INTERCHANGEABLE
Cylinder Assy,wheel
Federal Mogul Corp Sub Wagner Brake Moog Automotive Div
Cross-Reference Index
Part NumberManufacturer
NAS686C4M National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
13705E-048 Sps Technologies, Llc Dba PB Fasteners (USA)
13705E-048 Sps Technologies, Llc Dba Aerospace Fasteners Group Div Aerospace - Santa Ana (USA)
MS21060L4 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
RMLHTA521-2860-048 Harvard Industries Inc (USA)
MS21060L4 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
10121692 Nimikkeistokeskus Ncb Finland (FIN)
T65C428CM Sps Technologies, Llc Dba Cherry Aerospace Div Div Cherry Aerospace (USA)
F5001-4 Howmet Global Fastening Systems Inc. Div Microdot Products (USA)
RMLHTA521-2860-0 Harvard Industries Inc (USA)
RF200C4M Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems (USA)
Related Parts
5310-00-800-6176INTERCHANGEABLE
NUT,SELF-LOCKING,PLATE
F5001-4
2530-00-967-0691INTERCHANGEABLE
CYLINDER ASSY,WHEEL
F50014

Frequently Asked Questions

What is NSN 5310-00-779-6689?

NSN 5310-00-779-6689 is a Nut,self-Locking,plate, 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: cancelled.

What are the part numbers for NSN 5310-00-779-6689?

NSN 5310-00-779-6689 has 11 cross-referenced part numbers: NAS686C4M (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), 13705E-048 (Sps Technologies, Llc Dba PB Fasteners), 13705E-048 (Sps Technologies, Llc Dba Aerospace Fasteners Group Div Aerospace - Santa Ana), MS21060L4 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), RMLHTA521-2860-048 (Harvard Industries Inc) and 6 more.

What NSN replaces 5310-00-779-6689?

There are 2 known substitutes for 5310-00-779-6689: 5310-00-800-6176, 2530-00-967-0691. Verify interchangeability with system specifications before substitution.

What are the specifications of MS21060L4?

Key specifications for MS21060L4: Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Nut Style: PLATE; Plate Thickness: 0.032 INCHES MAXIMUM IN; Nut Length: 1.292 INCHES MAXIMUM IN. 23 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-779-6689 still in active supply?

NSN 5310-00-779-6689 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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