Used for attaching / detaching rotary volume of audio equipment, amplifier etc. Because the shaft has a long volume, it is easy to use because there is enough depth. Moreover, it was sized to be generally difficult to obtain and it was saved.
On 2010-10-12 09:18:07
Do not use a washer, or the thickness of the nut is thin, so it will damage the panel. It is better to thin the part engaging with the nut (nut does not get inside), Teflon processing on the surface that hits the part side. For light work, I want a deep type with a handle. I would be happy if there was even a thinner one.