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Military Standards - NUT - MS21044N5

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Military Standards - NUT - MS21044N5
Genuine OEM Part

Description:   NUT, SELF-LOCKING NUT
Part number:   MS21044N5
Alternate part number:   AN365-524A, MS20365-524


NUT-LOCK SELF .31-24
Nut - 5/16-24 Thread, Self-Locking Nut, Regular Height, Cadmium Plated Steel, Nylon Insert, 250°,

MS21044N5   SPECIFICATIONS

Parameter     Characteristics
Thread Class3B
Thread DirectionRight-hand
Locking FeaturePrevailing torque with nonmetallic insert
LubricationSoluble lubricant
Nut StyleHexagon
Nut Height0.271 inches minimum and 0.360 inches maximum
Width Across Flats0.492 inches minimum and 0.502 inches maximum
Temp Rating250.0 deg fahrenheit nominal
Thread SeriesUNJF
Thread Quantity per Inch24
Nominal Thread Size0.312 inches
Countersink Angle88.0 degrees nominal nut
Bearing Surface TypeChamfered or washer faced
Bearing Surface Finish125.0 microinches
MaterialSteel comp 1006 nut or steel comp 1008 nut or steel comp 1009 nut or steel comp 1010 nut or steel comp 1015 nut or steel comp 1018 nut or steel comp 1035 nut or steel comp 11L37 nut or steel comp 1213 nut or steel comp 12L14 nut
Surface Treatment  Cadmium nut and chromate nut
Surface Treatment Document and ClassificationQQ-P-416, ty 2, cl 3 fed spec single treatment response overall except insert



MS21044N5   Used on Aircraft Engines Oil Sump, Alternator/Generator, Accessory Case, Fuel Injection System, Exhaust/Turbo Charger.

Engine models:
Continental Motors 

  1. •O200     (-A,-B,-D,-X)
  2. •O300     (-A,-C,-D)
  3. •O470M
  4. •IO240     (-A,-B)
  5. •IO360     (-A,-AB,-AF,-C,-CB,-D,-DB,-D,-DB,-ES,-G,-GB,-H,-HB,-J,-JB,-K,-KB)
  6. •IO470     (-D,-F,-U,-V,-VO)
  7. •IOF240B
  8. •LTSIO360     (-E,-EB,-KB,-RB)
  9. •TSIO360     (-A,-AB,-C,-CB,-D,-DB,-E,-EB,-F,-FB,-H,-HB,-JB,-KB,-LB,-MB,-RB,-SB)
  10. •TSIO520BE
  11. •TSIO550     (-A,-B,-C,-E,-G,-J)
  12. •TSIO550     (-K,-D,-J,-K)

This part is used on the following aircraft:

  1. •Dassault Falcon 7X
  2. •Textron Aviation Beechcraft King Air 100 - all variants
  3. •Textron Aviation Beechcraft King Air 200 - all variants
  4. •Textron Aviation Beechcraft King Air 300 - all variants
  5. •Textron Aviation Beechcraft King Air 90 - all variants
  6. •Textron Aviation Cessna 500 Citation I-ISP
  7. •Textron Aviation Cessna 525 Citation Citationjet
  8. •Textron Aviation Cessna 550 Citation I-II-Bravo
  9. •Textron Aviation Cessna 560 Citation V-Ultra-Encore-Excel-XLS
  10. •Textron Aviation Cessna 650 Citation III-IV-VI-VII
  11. •Textron Aviation Cessna 750 Citation X


Dimensions
Dimensions (W x H x D) 0.5" x 0.5" x 0.313" Inches
Length 0.5" Inch
Weight 0.011 lb
Specifications
8130-3 Eligible NO
ATA Chapter 71 ATA Power Plant
Available Conditions NE / NS
Cage Code 96906
Country of origin United States of America
ECCN / USML 9A991.d
FAA Approval Code STD
Hazmat Code Not Applicable
Hazmat(Y/N) N
Material Steel, Nylon Insert
NSN 5310-00-088-0553
Schedule B 7318.16.0000
Thread 3B-UNJF
Total Shelf Life (days) Not Applicable
Type Nut, Self-Locking
Units of Measure (UoM) Each
Brand Military Standards
Condition status Depreciated
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