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EVERYTHING FOR PLANES AND PILOTS SINCE 1965 | 877-4-SPRUCE
Home / Hardware / Nuts / Castle Nuts /AN310 Castle Nuts
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AN310 Castle Nuts

30 Reviews 1 Answered Question
From $0.90 to $21.50
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Type Part No. Thread Size Cotter Pin Size Price Buy
Cad Plated
AN310-3
10-32AN380-2-2$0.90
Quantity
Cad Plated
AN310-4
1/4-28$1.36
Quantity
Cad Plated
AN310-5
5/16-24$1.15
Quantity
Cad Plated
AN310-6
3/8-24AN380-3-3$1.43
Quantity
Cad Plated
AN310-7
7/16-20$2.65
Quantity
Cad Plated
AN310-8
1/2-20$4.90
Quantity
Cad Plated
AN310-9
9/16-18AN380-4-4$13.50
Quantity
Cad Plated
AN310-10
5/8-18$2.76
Quantity
Cad Plated
AN310-12
3/4-16AN380-4-5$4.43
Quantity
Cad Plated
AN310-16
1-25/32$21.50
Quantity
Stainless Steel
AN310C3
10-32AN380-2-2$1.36
Quantity
Stainless Steel
AN310C4
1/4-28$1.75
Quantity
Stainless Steel
AN310C5
5/16-24$1.84
Quantity
Stainless Steel
AN310C6
3/8-24AN380-3-3$2.60
Quantity
Stainless Steel
AN310C7
7/16-20$4.35
Quantity
Stainless Steel
AN310C8
1/2-20$6.50
Quantity
Subtotal $0.00
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Overview

Fabricated from steel and cadmium plated per QQ-P-416A, Type II, Class 3. AN310 castle nuts are used with drilled-shank bolts, clevis bolts, eye bolts and studs. The slots in the nut accommodate a cotter pin for safety purposes. The thinner AN320 castellated shear nut, with half the tensile rating of the AN310 nut, is used with clevis bolts and threaded taper pins which are subject to shearing stress only.

Less 20% for quantity 100/Part No.

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Click Here for AN320 Shear Nuts

Reference Chart

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Reviews

Submit a Review

Its a size AN8 castle nut it will go on the end of the bolt that hold the engine on the mounts its big.

Sara B Verified Purchase

NUT, CASTLE AN310-8

January 11, 2022

Its the nuts for the above bolts what can I say, got to have them

Sara B Verified Purchase

NUT, CASTLE AN310-6

January 11, 2022

Great as always. Fast delivery

John E Verified Purchase

NUT, CASTLE AN310-3

January 6, 2022

all good well done

Vincent C Verified Purchase

NUT, CASTLE AN310-5

October 14, 2021

Ben B Verified Purchase

NUT, CASTLE AN310-3

October 14, 2021

Agra F Verified Purchase

NUT, CASTLE AN310-4

September 30, 2021

Agra F Verified Purchase

NUT, CASTLE AN310-6

September 30, 2021

Prompt service!

Ron C Verified Purchase

NUT, CASTLE AN310-3

September 9, 2021

OK

Brm A Verified Purchase

NUT, CASTLE AN310-4

August 29, 2021

David L Verified Purchase

NUT, CASTLE AN310-4

August 21, 2021

Great product quick service good prices I would use them again

Jeff J Verified Purchase

NUT, CASTLE AN310-10

June 18, 2021

Great product

Lorentz J Verified Purchase

NUT, CASTLE AN310-5

May 29, 2021

I am building a small scale radial engine. About 8 horsepower. These will be the prop nuts. They look fantastic. Mike Brainerd

Mike B
March 8, 2021

As usual, very fast shipping and well packed, a company I can always rely on.

Malcolm C
March 8, 2020

Perfect

Sport I
November 15, 2019

you are doing great getting everything here at reasonable rates and on time . USPS Priority does great Thanks

Bob B
November 7, 2019

Martha
July 12, 2019

Sport I
April 20, 2019

I am sure they will work when I need to use them . Wrong size for this job. MY fault.

Mark
March 8, 2019

All hardware arrived quickly and as listed and in good condition!

Tim O
February 7, 2019

Nice and shiny....

Stick N
August 11, 2018

Very happy with the kind friendly service and fast shipping that Ms Henley provided..Super Girl.

James B
August 4, 2018

In stock and shipped right away.

Edward B
July 31, 2018

fit just right

Glenn T
December 24, 2017

its a nut, but perfect for what I needed

Dave M
September 6, 2017

Gard
March 16, 2017

a little pricey

Darrin T
April 23, 2020

a little pricey

Darrin T
April 23, 2020

Service was good but one of the castle nuts had no threads

Pat L Verified Purchase

NUT, CASTLE AN310-5

August 31, 2021

These things are horrible! Absolute junk! The coating on the threads was so thick that you had to use tools to screw the together. Even worse, the slots were cut off-center so you couldnt put a cotter pin through them. No quality control on these at all!

Steve P
March 23, 2021
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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: Are these castle nuts unified national fine thread?

Yes, they are standard AN UNF thread.

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