... steel 2Size:M30*100,150 3Finish:Black 4Certificate:ISO9001:2008,SGS Fasteners M30*100,150 black half thread hex head bolts ... JIS, GB, GOST, UNI, etc. 4Grade: 4.85Surface: Black, (Darconmet, HDG, Zinc plated, etc.)6Proven technique & good quality.7Packaging: wooden box8We can ... honorary certificates:3.product: M30*100,150 Black hex boltsM27*90,100,110,120 Black hex head bolts4. Factory view figures: ...