z wrote:

On Dec 23, 2:12 pm, Big_Jake wrote:
On Dec 23, 12:30 pm, wrote:

who invented these nuisances (requires a special tool) - and was there
an underlying good reason to NOT use ordinary hardware?

They don't "require" a special tool. You can snug them up with a
small channellocks ot tighten them or loosen them with a hammer and
screwdriver.

That's not really a big plus. Smacking on the end of a screwdriver to
tighten these up is optimal for neither the tightness of the nut, the
tip of the screwdriver, or the skin on your face.

That's why God created apprentices.

--
Paul Hovnanian
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Parity on, dudes!