split pin BrE
cotter pin AmE

The nut is then secured with a cotter pin or safety wire.

That's what she'd been trying to find in the drawer; a nail or something to replace the cotter pin so she could continue her task.

He flattened himself against the wall and released the cotter pin on the first grenade.

There would be a hole right through the knuckles and that's where the cotter pin goes.

"There's no resistance at all," she confirmed, barely moving the cotter pin.

"The cotter pin on the lower rack slider came out and I can't get it back in."

The company originally produced only cotter pins and then plumbing supplies.

He saw the bent cotter pin and the wedged cable.

Instead of the plane's aluminum skin, the surface over the box was a metal plate held in place by a cotter pin.

The tab was locked down by a cotter pin which he yanked out.