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Home / Hardware / Nuts / Castle Nuts /Nut, Castle AN310-4
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Nut, Castle AN310-4

48 Reviews 2 Answered Questions
Packaged Items
SinglePack of 10
Quantity
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TypePart No.Thread SizeCotter Pin Size
Cad PlatedAN310-41/4-28

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.

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Reviews

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Good quality and view.

Julian S Verified Purchase

Nut, Castle AN310-4
September 27, 2024

I’m happy

Lou B Verified Purchase

Nut, Castle AN310-4 (Pack Of 10)
September 3, 2024

Gunnlaugur K Verified Purchase

Nut, Castle AN310-4
September 2, 2024

Its a AN nut. Priced right

Abbas N Verified Purchase

Nut, Castle AN310-4
April 16, 2024

Dominique L Verified Purchase

Nut, Castle AN310-4 (Pack Of 10)
April 2, 2024

Ward A Verified Purchase

Nut, Castle AN310-4
February 28, 2024

Ward A Verified Purchase

Nut, Castle AN310-4 (Pack Of 10)
February 28, 2024

Perfect nuts and on time.

Kevin B Verified Purchase

Nut, Castle AN310-4 (Pack Of 10)
December 10, 2023

I am the king, I need castles. Preferable in a 10 pack.

David S Verified Purchase

Nut, Castle AN310-4 (Pack Of 10)
December 9, 2023

Good, must have castle nuts.

Blane J Verified Purchase

Nut, Castle AN310-4
October 3, 2023

Q&A

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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.

Q: What are the hex sizes and height for the AN310-6 and 310-8 castle nuts?

AN310-6 would use a 9/16 wrench and is 13/32 tall

An310-8 would use a 3/4 wrench and is 9/16 tall.

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