General description L Bolts are versatile fasteners commonly used to attach plate members to concrete foundations, provide anchorage for lightweight post bases, and for general anchorage to concrete. This Foundation Bolt (Anchor or L-Bolt) is made from T316 Marine grade (A4) Stainless Steel, which offers superior corrosion resistance, making it suitable for marine applications and environments exposed to industrial chemicals and solvents. Technical specifications Diameter (D): M20 Length (L): 300 mm Shank length (S): 80 mm Head thickness (T): 60 mm Radius (R): 20 mm Tolerance on dimensions: +/- 1 mm Other information Supplied without nuts and washers, allowing you to choose the best options for your needs. The bar diameter is slightly less than the thread diameter due to roll threading.