AN818-4

Nut, Tube Coupling

Part number

AN818-4

NSN

4730-01-654-2630

NIIN

01-654-2630

Item name

Nut, Tube Coupling

Manufacturer

Aeronautical Standards Group

CAGE code

88044

FSC

4730

Unit of issue

EA

DEMIL code

A

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Alternate part numbers

• AN818 CAGE 88044
• AN818-4R CAGE 88044
• SAE-AS4841 CAGE 0U583

Technical characteristics

Thread Class

3B

Thread Direction

Right-hand

Nut Style

Tube coupling

Nut Height

0.615 inches minimum and 0.625 inches maximum

End Item Identification

F-35 aircraft

Width Across Flats

0.559 inches minimum and 0.566 inches maximum

Length to Shoulder

0.406 inches nominal

Smallest Inside Diameter

0.305 inches minimum and 0.308 inches maximum

Thread Series

UNJF

Thread Quantity per Inch

20

Nominal Thread Size

0.4375 inches

Part Name Assigned BY Controlling Agency

Nut, tube coupling, short

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