This nut from RS PRO is a fastener for a lead screw with a trapezoidal thread. You can use it to hold the screw firmly in place in equipment that moves heavy loads, such as vices or lathes.
The nut is made from bronze, so it has good resistance to wear and isn't affected by the friction that can result from constant movement. This material also has good anti-corrosive properties and isn't likely to rust when it comes into contact with liquid contaminants such as water or abrasive chemicals.
Flanged nuts like this are commonly used in the food and beverage industry, as they can withstand frequent cleaning and washdowns without corroding. You can also use them in electric linear actuators, machine tools and jacks.

• For a shaft diameter of 12 mm
• Flanged round lead screw nut type
• Lead size of 3 mm
• Outside diameter of 48 mm
• Overall length of 35 mm