left-hand thread

The left side pedal of a bicycle has a left-hand thread.

Screws with left-hand threads are used in exceptional cases.

The center unscrewed when twisted along a left-hand thread.

Moreover, it had a left-hand thread; to fool the ordinary handler.

It's just the novelty of the left-hand thread.

The muzzle brake is threaded on to the end of the barrel with a left-hand thread.

Does she have that famous left-hand thread?

Penetrating oil may be necessary, and sometimes the nuts have left-hand threads, requiring clockwise turning to loosen them.

And as useful as a left-hand thread bolt when a right-hand is needed."

Some lamps and fittings have a left-hand thread to deter theft, since they cannot be used in other light fixtures.

However, universal removal tools are available which grip the head of the locking nut using a hardened left-hand thread.

The bottles were joined by a stainless-steel T-piece that screwed into the special left-hand thread in the necks.

The nipples were unusual in that one end had left-hand threads while the other had right-hand threads.

Equipped with a left-hand thread, cylinders must be turned and tightened counterclockwise, Mr. Russell said.

For left-hand threads, the letters "LH" are appended.

The upper end of the kelly is screwed into the swivel, using a left-hand thread to preclude loosening from the right-hand torque applied below.

Standardized variations include multiple-start threads, left-hand threads, and self-centering threads (which are less likely to bind under lateral forces).

It normally consists of two threaded eye bolts, one screwed into each end of a small metal frame, one with a left-hand thread and the other with a right-hand thread.

Some fittings use a right-hand thread, while others use a left-hand thread; left-hand thread fittings are usually identifiable by notches cut into them.

They invented the self-oiling hub and the innovation of machining the crankarm and pedal on the left side of the bike with left-hand threads to prevent the pedal from coming unscrewed while cycling.

For bicycle pedals, the one on the left is reverse-threaded, or the pedal will unscrew during use; similarly, the flyer whorl of a spinning wheel uses a left-hand thread to keep from loosening in normal use.