Item
high duty carbon steel DIN933 DIN931 grade8.8 black bolt
Standard
DIN933 DIN931 DIN6914 A325 ISO4017
Grade
4.6, 4.8, 8.8, 10.9, 12.9, AISI 2, AISI 5, AISI 8, AISI 10.
Meterial
stainless steel304,316,carbon steel35#, 45#, alloy steel, brass...
Surface treatment
HDG, PTFE coated, plain, black, galvanized, yellow zinc plated...