Skip to content
FREE UK delivery on orders over £75.00 ex VAT
FREE UK delivery on orders over £75.00 ex VAT
Hex Dome Nut, Metric, A4 (316) Stainless Steel, DIN 1587

M12 Hex Dome Nut, Metric, A4 (316) Stainless Steel, DIN 1587

Please Note: Image is for illustration purposes only. For accurate specifications, please refer to the information provided or reach out to us directly.

Item Code: HDN-MA4-12
300
 Available for Dispatch & Collection Today
300
 Available for Dispatch & Collection Today
300
 Available for Dispatch & Collection Today
5000
 Available for Dispatch & Collection within 1-2 working days

M12 Corrosion Resistant Dome Nut

M12 hex dome nut manufactured in A4 stainless steel for excellent corrosion resistance making it ideal for. . .

Read More

M12 Corrosion Resistant Dome Nut

M12 hex dome nut manufactured in A4 stainless steel for excellent corrosion resistance making it ideal for internal and external use, including salt water marine environments.

This dome nut (also called an acorn nut or cap nut) has a dome shape that gives it a smooth rounded appearance. This serves as both functional and aesthetic as the dome nut prevents the bolt thread from protruding.

This offers a safer and more polished finish which often sees them used in public areas where the nut and the end of the bolt are exposed.

Installed with conventional tools sees these dome nuts widely used by both DIY enthusiasts and professionals alike across numerous industries.

M12 Dome Nut Specifications

  • Thread Diameter: M12 - 12mm
  • Socket size (SS): 19mm max
  • Hex nut height (NH): 10mm max
  • Overall domed nut height (H): 22mm
  • Thread Pitch: 1.75mm
  • Material: A4 (316) stainless steel
  • Manufacturing standard: DIN 1587

Key features & benefits of dome head nuts

  • Domed closed design - covers exposed threads for safety and aesthetics
  • Hexagonal body - easy to install using a range of standard tools
  • Marine grade corrosion resistance - high corrosion resistance and reduces risk of corrosion and thread damage
  • Improved safety - eliminates sharp or exposed bolt ends
  • Versatile use - suitable for indoor, outdoor, and visible applications

Common applications of dome head nuts

  • Furniture and architectural fittings
  • Automotive and motorcycle assemblies
  • Handrails, balustrades, and signage
  • Machinery guards and exposed bolt ends
Part of a large and growing range of hex nuts in stock at Fusion Fixings with bulk discounts across the range.

Frequently Asked Questions about dome head hex nuts

What is a dome nut used for?

Dome nuts are used to cover exposed bolt threads, improving safety, preventing snagging, and gives a clean, professional appearance. They are commonly used on furniture, railings, vehicles, and visible fixings.

Are dome nuts the same as acorn nuts?

Yes, dome nuts, acorn nuts, and cap nuts all refer to the same type of fastener. The names are used interchangeably across the UK and internationally.

Can dome nuts be used outdoors?

Yes, these dome nuts are manufactured in A4 stainless steel. This offers a high level of corrosion resistance including the use in salt water and marine environments. 

Do dome nuts make fixings safer?

Yes, the dome nuts can make the fixings safer as they are designed to cover sharp or protruding threads. Dome nuts reduce the risk of cuts, snags, and injury, making them ideal for public-facing or domestic applications.

Can you reuse dome nuts?

Dome nuts can be reused provided the threads are not damaged and the nut has not been overtightened or corroded.

Read Less

Delivery Information

We offer shipping options to cater for all locations throughout the UK and aim to dispatch all orders on the same working day with a cut-off of 1pm. Please visit our Delivery Information page for more information on the options available.

Please Note: Due to a national shortage of delivery drivers, we cannot guarantee delivery times, for more urgent orders, please contact us for a more accurate lead time.

Returns Information

30 Day Returns on Standard Orders

Standard orders come with a 30-day refund policy. Please visit our Returns Policy page to view our Terms & Conditions.

QTY Breaks Price Each Ex VAT
Buy 10+ £0.58
Buy 100+ £0.31
Price Each:
£0.31 - £0.85
£0.85 ex VAT
£0.31 - £0.85
£0.85 ex VAT
£1.02  incl VAT

Delivery Information

We offer shipping options to cater for all locations throughout the UK and aim to dispatch all orders on the same working day with a cut-off of 1pm. Please visit our Delivery Information page for more information on the options available.

Please Note: Due to a national shortage of delivery drivers, we cannot guarantee delivery times, for more urgent orders, please contact us for a more accurate lead time.

Returns Information

30 Day Returns on Standard Orders

Standard orders come with a 30-day refund policy. Please visit our Returns Policy page to view our Terms & Conditions.