Product name:- Structural Bolt Product description:- The wide range of products of ASTM Bolt............... We have marked a distinct and dynamic position in the market by manufacturing, exporting and trading a quality assured array of ASTM Bolt (Structural Bolt) Grade :-8.8, 10.9. B7 Sizes:- M12 To M36 (1/2" to 2") Finish:-Natural Finished (Self finish / Plain Color), Auto Black, White Zinc, Yellow Zinc, Hot Dip Galvanised, Zinc Finish (Galvanised), ZINC PHOSPHATING.