NUT, PAL RF516240-214

Packaged Items
SinglePack of 25
Part No.Thread Size


MS27151 engine nuts replace AC356 Pal nuts. They are stamped from 1050 spring steel and cadmium plated per QQ-P-416A, Type II, Class 3

Less 20% for quantity 100/Part No.
California Prop 65 Warning Symbol

WARNING: The product may contain and/or expose you to a chemical(s) or substance(s) which are known to the State of California to cause cancer and/or birth defects or other reproductive harm.


Fast delivery and great pricing. I ordered PAL nuts for the connecting rods on my 1949 Ford trucks flat six cylinder engine. This is a rather hard engine to find parts for and no vendor who sells parts for these old truck sells PAL nuts that Ford used way back then. Found them here.

Robert J Verified Purchase

NUT, PAL RF516240-214

November 2, 2022


Afelio S Verified Purchase

NUT, PAL RF516240-214

January 4, 2022

The 5/16-24 nuts also work well on 5/16-18 studs (such as Lycoming carb mounting).

Patrick W
December 9, 2018

Just what I needed at the right price and super fast service .

Harley W
July 6, 2017


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.

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