Basic info Model No.: A307 Type: Hexagon Head Head style: Hexagonal Material: Carbon Steel Standard: ASTM Additional info Trademark：M Packing: 25kgs Per Box, 36 Boxes Per Pallet Origin: Ningbo, China HS Code: 73181500 Product Description Grade: GR A GR B Size: 1/2"-2 1/2" Material: Carbon Steel Surfaces: Black, Zinc, HDG, Phosphated, Dacromet etc. Packaging: 25kgs Per Box, 36 Boxes Per Pallet Keyword: A307 Hex Bolts /A307 /A307 grade A /A307 grade B