Product name
grade 4.8 8.8 zinc plated din6921hex flange head bolt
Grade
4.8, 8.8, AISI 2, AISI 5
Size
M5-M20, 1/4"-3/4", or customized
Material
stainless steel304,316, carbon steel, alloy steel......
Surface treatment
black, galvanized, yellow zinc plated......