[30pcs 5 & 16-18]
[20pcs 3 & 8-16]
[10pcs 1 & 2-13]
[20pcs 7 & 16-14]
[60pcs 10-24]
About hat nuts:
Cap nuts, sometimes called cap nuts, are a type of fasteners whose name comes from its shape. They have a closed end to prevent contact with the male thread. The cap nuts can be easily removed for maintenance, they also provide an aesthetic finish.