Aeronautical Standards Group​​ - NUT - AN818-4D



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Aeronautical Standards Group​​ - NUT - AN818-4D
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Aeronautical Standards Group - NUT - AN818-4D
Genuine OEM Part

Description:   NUT, Coupling Nut, Aluminum Tube Nut
Part number:   AN818-4D

Coupling Nut - Tube Outer Diameter: 1/4", Thread: 7/16-20, Flared Tube, Aluminum



Thread Class 3B
Thread DirectionRight-hand
Fabrication MethodAny acceptable
Nut StyleTube coupling
Nut Height0.620 inches nominal
End Item IdentificationB-1 aircraft support equipment. B-52 aircraft support equipment. TF33-P-3/5/9 (C/EC-135, B-52H) aircraft engine. H-3 helicopter support equipment.
Width Across Flats0.563 inches nominal
Length to Shoulder0.532 inches nominal
Smallest Inside Diameter0.305 inches nominal
Thread SeriesUNF
Thread Quantity per Inch20
Nominal Thread Size0.438 inches
Nominal Tube Outside Diameter0.250 inches
Criticality Code JustificationFEAT
Special FeaturesWeapon system essential. grumman A-10 aircraft
MaterialAluminum alloy overall
Surface TreatmentAnodize overall

This part is used on the following aircraft:

  1. •Bombardier Challenger 601
  2. •Bombardier Challenger 604
  3. •Bombardier Challenger 605
  4. •Dassault Falcon 2000 all variants
  5. •Dassault Falcon 7X
  6. •Dassault Falcon 900 all variants
  7. •Embraer Legacy 600-650
  8. •Textron Aviation Beechcraft King Air 100 - all variants
  9. •Textron Aviation Beechcraft King Air 90 - all variants
  10. •Textron Aviation Cessna 500 Citation I-ISP
  11. •Textron Aviation Cessna 550 Citation I-II-Bravo
  12. •Textron Aviation Cessna 650 Citation III-IV-VI-VII
  13. •Textron Aviation Cessna 680 Citation Sovereign
  14. •Textron Aviation Cessna 750 Citation X
  15. •Textron Aviation Hawker 400-400XP
  16. •Textron Aviation Hawker 700
  17. •Textron Aviation Hawker 800
  18. •Textron Aviation Hawker 800XP-850XP
  19. •Textron Aviation Hawker 900XP

Between AirParts' branded hardware products, and our Seller's hardware offerings, we have hundreds of thousands of hardware parts in stock.

Dimensions (W x H x D) 0.63" x 0.63" x 0.69" Inches
Length 0.69" Inch
Weight 0.01 lb
8130-3 Eligible NO
Available Conditions NE / NS
Cage Code 88044
Country of origin United States of America
FAA Approval Code STD
Hazmat Code Not Applicable
Hazmat(Y/N) N
Material Aluminum
NSN 4730-00-287-0289
Schedule B 7616.10.6000
Total Shelf Life (days) Not Applicable
Type Nut, Coupling
Units of Measure (UoM) Each
Brand Aeronautical Standard Group Inc
Condition status Depreciated