1216139 is a nut from Bossard, a global supplier of industrial fasteners, tools and components for the aerospace, automotive and electronics industries. The nut is a type DIN934 hexagon thin nut, designed to be used with screws, bolts, and other threaded fasteners. It is made from Grade 10.9 alloy steel, making it highly resistant to age and stress, and has a zinc-plated finish for longer life. The bolt is designed for use in tight spaces and is available in M3, M4, M5, and M6 sizes.