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EVERYTHING FOR PLANES AND PILOTS SINCE 1965 | 877-4-SPRUCE
Home / Hardware / AN Fittings / Nuts /AN818 Nut Coupling
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AN818 Nut Coupling

32 Reviews 4 Answered Questions
From $0.80 to $15.75
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Size No.
Steel
Size No.
Alum
Size No.
SS
Tube
O.D.
Thread
Size
Buy
Steel
Buy Aluminum Buy Stainless
22D--1/85/16-24$14.55
Quantity
$1.25
Quantity
--
33D--3/163/8-24$3.55
Quantity
$1.15
Quantity
--
44D4J1/47/16-20$3.65
Quantity
$0.80
Quantity
$2.45
Quantity
55D--5/161/2-20$5.35
Quantity
$1.10
Quantity
--
66D6J3/89/16-18$4.35
Quantity
$1.10
Quantity
$3.90
Quantity
88D8J1/23/4-16$2.85
Quantity
$2.40
Quantity
$5.95
Quantity
1010D10J5/87/8-14$8.50
Quantity
$4.35
Quantity
$8.50
Quantity
1212D12J3/41-1/16-12$14.50
Quantity
$3.90
Quantity
$11.50
Quantity
----16J11-5/16-12----$15.75
Quantity
Subtotal $0.00
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Overview

AN Nut Couplings
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Reviews

Submit a Review

Nice fitting

Warren W Verified Purchase

AN FITTINGS AN818-2D NUT

February 22, 2022

Robert E Verified Purchase

AN FITTINGS AN818-2D NUT

February 11, 2022

Always the best. Aircraft Spruce as of today has the best price on these AN818-6D fitting.

Lewis M Verified Purchase

AN818-6D AN FITTING NUT

January 25, 2022

perfect fit!

Steve C Verified Purchase

AN FITTINGS AN818-2D NUT

January 24, 2022

Stephen L Verified Purchase

AN FITTINGS AN818-5D NUT

January 5, 2022

Flying B Verified Purchase

AN FITTINGS AN818-4D NUT

December 4, 2021

Excelent

Bodegas C Verified Purchase

AN818-6D AN FITTING NUT

November 16, 2021

As ordered with quick service

Ken H Verified Purchase

AN FITTINGS AN818-4D NUT

October 22, 2021

Scott W Verified Purchase

AN FITTINGS AN818-4D NUT

October 19, 2021

Scott W Verified Purchase

AN818-6D AN FITTING NUT

October 19, 2021

Scott W Verified Purchase

AN FITTINGS AN818-8D NUT

October 19, 2021

great

Harold H Verified Purchase

AN FITTINGS AN818-8D NUT

October 15, 2021

Rob M Verified Purchase

AN FITTINGS AN818-4D NUT

June 1, 2021

I used this as part of a primer line installation on a 0-320 Lycoming. It worked well, the challenge was attaching the cone to the copper tubing, a machine shop had to braze it. The nozzle ports needed a 1/8 npt tap run down the cylinder to allow enough thread engagement for the nozzle. The copper tubing is challenging to flare since it is so small, re-doing a flare was needed to make a leak free connection.

David S
December 31, 2020

Good service....Denis..

Denis L
December 29, 2020

worked good

Christopher W
October 28, 2020

worked good

Christopher W
October 28, 2020

As ordered

Byers C
July 9, 2020

Great quality

Jerry C
January 16, 2020

I live in Michigan. My order was shipped from Georgia. It would be nice to order parts from Chicago.

Ross B
September 20, 2019

Philip C
April 4, 2019

Great quality

Philip C
March 16, 2019

Fits perfectly

Larry G
October 22, 2018

Great fittings and expert service/shipping.

Charles G
July 12, 2018

Wonderful stuff!

Cowden W
July 2, 2018

Daniel S
February 27, 2018

Douglas M
December 28, 2017

Great project part for student projects.

Ed B
October 16, 2017

Good quality

Monte H
March 23, 2017

All these nuts are great. Just make sure you start by hand 3 threads to prevent cross threading.

James E
March 2, 2017

No ferrule included!

Michael S
April 23, 2021

I am a big fan of spruce however this item is not a coupling nor is it a cap as it has no insert. The catalog and online pics really aren’t clear.

Lamb
April 24, 2020
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Q&A

Submit

Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Is there a C-O-C statement on the packing slip for AN-818-8D nuts?

Every invoice has a general Certificate of Conformance, but if a manufacturer cert is required, you must request at the time of order and there is a charge for the paperwork.

Q: What is the weight of the AN818-6D?

The weight of AN818-6D is approximately .056 lbs.

Q: Do the AN818 coupling nuts have pre-drilled holes for safety wiring?

No, these do not have any pre-drilled holes for safety wiring.

Q: Do these AN818 fittings come with the internal stop that you slide over the tubing before flaring?

This is the nut only. The sleeve part number is AN819, add dash number for size and material.

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