Catalog number: 10177193 Features: ● A metal fitting with an integrated washer and nut. By tightening the anchor bolt M12 with the main body, the finished surface can be made flat. ● The protrusion on the back of the washer cuts the wood, so no seat carving work is required and construction can be done quickly. ● Since the finished surface is flat, construction can be easily done even in cases such as joist-less construction. Uses: ● For tightening anchor bolts. Specifications: ● Thread diameter (mm): M12 Material/Finish: ● Carbon steel that meets JIS B 1180 strength classification 4.6 or 4.8 ● Surface treatment: JIS H 8610 (electrolytic zinc plating) Ep-Fe/Zn8/CM2 Note: ● A dedicated bit (sold separately) is required.
