Known in the UK as a Dome Nut these are a popular nut used in applications where aesthetics are important, giving an attractive finish. Dome Shaped, as the name suggests, they ensure a smooth snag-free surface protecting both the fixing and any foreign body that may come into contact. Also known as a Acorn Nut in the USA, these nuts are manufactured to DIN 1587. Also available as an Dome Nyloc Nut manufactured to DIN 986. Available in UNF, UNC and Metric sizes. USA versions to ASME B18.2.2.