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Screw Thread Inserts, Self Locking MS21209F4-20

Packaged Items
SinglePack of 10
MaterialThread SizeNominal DiameterNominal LengthPart Number
Dyed Red1/4-280.2500.500MS21209F4-20

Overview

Screw Thread Inserts - Self Locking

Material - Stainless Steel Per NASM8846
Finish - Plain, Dyed Red Or Dry Film Lube (L) Per AS5272
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Q&A

Please note, Aircraft Spruce Canada'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 Canada 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 makes these self locking?

There is a grip coil in the unit making it a locking.

Q: What tool is required to install?

You would use a helicoil insert tool/mandrel. We do not carry individuals but we have them in kits, like pn 33004.

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