Cup Squares Bolt & Nut 10mm x 90mm qty100

A cup square is a domed head bolt with a square anti-spin shoulder.
Ungalvanized; ideal for welding purposes.
Cup squares are mainly used to attach wood to wood, for example, the seat and back slats of garden benches to the support structure.
Also used in construction and roofing projects.
Useful to connect metal and wood.