For panel installations to eliminate magnetic interference.
Brass with black oxide finish.
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.
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These are good. Real good.
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.
What you referring to is an instrument nut, sometimes referred to as a grasshopper nut and they come in different sizes. The thread size is the same, but the instrument bezel thickness can be different per gauge. They are ordered by the back bezel thickness. They are inserted from the back, and they have ears pointing out that slide into a groove between the front and back bezel to stay in place. A sample part number is MS33737-9C. A search on our web site for this part number will take you directly to the web page containing all the sizes.