Specifications: 1) made by cold forging and hot forging 2) available varieties: A. Hexagon bolts B. Hex flange bolts C. Hex socket bolts D. Mush head square neck bolts E. Guard rail bolts F. Square head bolts G. T-head bolts H. Foundation bolts I. Lifting eye bolts J. Customized bolts also available Grade: From ISO 4.8 to ISO 12.9 Our entire range of fasteners are made of carbon steel, alloy&stainless steel, aluminum, brass, and other special materials. Production is carried out in compliance with din, ifi, ANSI/asme, bs, ISO, jis specifications Packing: G. W.:25kgs/carton in wooden package or small mail box according to customer inquire Surface treatment: Plain, black, zinc, hot dip galvanized, dacromat, elctro galvanized etc.