What type of fastener is in the picture?
Correct answer: Nut

Das
l work with a bunch on NUTS every day .

South Snow
Torque all nuts properly

HawaiianShirtGuy
Right ✅️ US, Almost, always is correct. I've used hex nuts as spacers or even as a makeshift trivet.

Ghorpaapi
Never tighten one nut completely, gradually tightened nuts in a diagonal/cross sequence tightening will provide maximum pressure and is proven to be long lasting.

TherianJynx
Picture totally gave it away

joey
Right ✅️ US, one of my pet peeves, is it almost or is it always it can be both , it's like saying i never eat fish always

Right ✅️ US
Brewer & Shipley; Tarkio

Right ✅️ US
Sloth Show, Torque0 Road

Right ✅️ US
"Almost always"; When isn't it ?