An insulation displacement contact is for piercing through an insulation of a cable or wire in a cutting direction and electrically contacting an electrically conductive core of the cable or wire. The insulation displacement contact includes a contact body having a piercing section for piercing the insulation and a contact slot receiving the core of the cable or wire. The contact slot extends along the cutting direction from the piercing section into the contact body. The contact body has a pair of blades separated by the contact slot. The blades have a pair of attachment slots extending from the piercing section into the blades.