Sliding nut, without screw, for C-anchor rails with a clear inside width of = 43 mm, can be used at any point with a fastening screw in the profile. for anchor rails/profile rails: 2987 with 26 mm slot width 2991, 2992, 2994 and 2995 with 22 mm slot width Dimensions (approx. dimensions) Length L: 42 mm Width B: 21 mm Height H: 12 mm Thread: M 12 Strength class: 8 Material: Steel, hot-dip galvanized in accordance with DIN EN ISO 1461/10684