Black Dome Nuts Steel Acorn Cap Nut

A cap nut protects bolt threads underneath it, whilst providing a cleaner, more aesthetically pleasing appearance and improving safety on some applications.

If an application requires a smooth finish or exposed threads to be covered, cap nuts are an excellent solution for this – and they come in a number of styles including low crown and acorn nuts.

Available in a wide range of materials, from stainless steel to brass and everything in between, and can be polished for a shining, aesthetically pleasing appearance. They can be created with both coarse and fine threads but this will create differences in price.

Non-standard sizes, materials and finishes are available to order as specials, including small volume manufacture, modifications and custom parts made to drawings.

Also known as acorn nuts, these nuts have a smooth rounded head that covers and protects threads while providing a finished appearance. Made from Grade 5 steel, they're suitable for fastening most machinery and equipment.

Zinc-plated steel cap nuts resist corrosion in wet environments.

Black corrosion-resistant-coated steel cap nuts have excellent resistance to chemicals and salt water.