Gangtong Zheli is China manufacturer & supplier who mainly produces Gr 8.8, Gr10.9 Hot Dip Galvanized DIN 931 Hex Bolt with Half Thread with many years of experience. Hope to build business relationship with you.
Hexgonal head bolt:
Hex bolt is always made by carbon steel, alloy steel and stainless steel.
Inch series as per ANSI B18.2.1 dimensions always supplied in Grade 5 and Grade 8 according to SAE standard in carbon steel and alloy steel. 18-8 stainless steel hex flanged screws also available.
Metric series carbon steel hexagon bolts generally supplied in class4.8, 8.8, class 10.9 and class 12.9 as per DIN931/933,DIN6914,A325/A325M,A307,A490, BS3692,JIS1181,etc.and ISO standard Nonstandard bolt
Surface treatment could be in black oxide, galvanizing, dacromate. Stainless steel hex flanged bolts also available in SS304 and SS316, Class A2-70 and A4-80.