These precision-made nuts are reliable and economical fastening devices The fiber insert gives a friction grip on the threads of the bolt and holds securely. The AN364 (thin) stop nut is for use in structural applications where the bolt is loaded primarily in shear or in any application where the tensile strength of the regular height AN365 is not required. Cad stop nuts are furnished to military specifications. Stainless is furnished to military specification.
AN364 (supersedes MS21083) - cad plated stop nuts
AN365 (supersedes MS21044) - cad plated stop nuts
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Common high grade commercial fastener.
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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.
C after the -1032 will indicate that this is a all-metal stop nut. You will need to go with a MS21042 series nut. MS21042-3 will be the correct cross reference part for your MS20364-1032C. You could also order part # 04-01359 which is a MS20364-1032C THIN HEX NUT.
"A" stands for non metallic insert, or elastic/nylon lock nut. They are the same part, we just drop the "a" in our system.