Hex head bolt Hex cap screw
Standard:DIN931 DIN933 DIN558 DIN601 DIN960 DIN961 DIN7990
IFI C-10(A10) IFI C-6( A6 ) ANSI B18.2.1
Dia.: M12-M100;1/2" ~ 4"
Length:20 mm-1000 mm; 3/4"-40"
Metarial/Grade: class 4.8,6.8, 8.8,10.9,12.9; grade2,5,8; astm a307,
Surface treatment: plain ,black oxygenation, zinc plated, hot dip galvanizing, etc.
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