JBFS shuttering accessories are the fixings that hold formwork together and in position. The range is bridge crib, shikanja, adjustable column clamps, wing nuts and tie rods. They are made to work with JBFS shuttering plates and scaffolding. Tie rods and wing nuts come in 15, 17 and 20 mm sizes, which are typical. Material is mild steel, forged or cast as applicable. Finish is plain or electro-galvanised.