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Axle Nuts

15 Reviews 3 Answered Questions
From $4.85 to $41.75
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Nut Type Thread Axle Type Part No. Price Buy
Matco Castle5/8-18Matco
06-11815
$4.85
Quantity
Castle1-1/4x16Cessna
06-11800
$17.75
Quantity
Castle1-1/2x16Cessna
06-11900
$18.55
Quantity
Grove Round1-1/4-12Piper
06-00937
$41.75
Quantity
Subtotal $0.00
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Overview

Castle type nuts manufactured to MIL Specification MS21025 using 4140 steel. Mild steel nuts are not acceptable for use on certificated aircraft. 1-1/4" dia. nuts for 500 x 5 axles, 1-1/2" dia. nuts for 600 x 6 axles.
   
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Reviews

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Roni B Verified Purchase

Castle Nut 600X6 MS21025-24
September 18, 2024

Uts A Verified Purchase

Nut Axle Castle 1-1/4 X 16
July 9, 2024

Michael S Verified Purchase

Nut Axle Castle 1-1/4 X 16
May 17, 2024

Backordered at Wicks so I ordered from here. Works as designed.

Taylor F Verified Purchase

Castle Nut 600X6 MS21025-24
October 8, 2023

Jan A Verified Purchase

Grove Round Axle Nut 5514
November 17, 2022

Exactly what I needed. Thanks!

James J Verified Purchase

Castle Nut 600X6 MS21025-24
July 26, 2022

I bought these because I needed 1-1/2-16 threaded nuts for a non-aircraft project. Its a hard to find thread size but Aircraft Spruce provided the solution..

Gary
December 31, 2020

Perfect as advertised.

William B
September 25, 2020

High quality and a perfect fit.

Ralph L
April 26, 2020

Great Product, Great Fit. Steve

Stephen F
March 21, 2020

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: What are the dimensions on the Matco Castle 5/8-18 (Part Number 06-11815)? Specifically the height of the castle nut and the outer flat side.

The dimensions of 06-11815 are 9/16 inch height x 15/16 inch outer flat side. Looking at the drawings in the "Drawings" tab, these would H and F. For reference, G is 1-1/16 inch.

Q: Are the MS21025-24 axle nuts, your part number 06-11900, usable for certificated aircraft?

It is a Mil Spec part, so as long as the aircraft manufacturer calls for this as a replacement part, it would apply to a certified aircraft. Similar to AN bolts and nuts.

Q: What cotter key is to be used with 06-11815 5/8x18 axle nut?

MS24665-360 or -362 will work just fine

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