- Hex thin slotted and castle nuts-coarse and fine pitch thread, product grades A and B (DIN 979)
- Hexagon castle nuts, coarse thread, product grade C (DIN 935 3)
- Hexagon connecting nuts (DIN 6334)
- Hexagon slotted castle nuts - metric coarse and fine pitch thread A & B (DIN 935 3, DIN 935 1, UNI 5593, UNI 5595, NF E27-414)
- Hexagon thin slotted and castle nuts (DIN 937, UNI 5594)