Cap Nut are also known as dome nut. Cap nut are designed to cap and cover exposed threaded rod, stud and bolt ends for purpose of safety and a decent look.
Brass Cap Nut Available from 3 mm till 24 mm
Galvanized (G.I) Cap Nut Available from 4 mm till 20 mm and from 1/4" till 1/2"
Stainless Steel (S.S) Cap Nut Grade 304 (A2-70) Available from 3 mm till 24 mm
Stainless Steel (S.S) Cap Nut Grade 316 (A4-70) Available from 3 mm till 24 mm