... gr1 gr2 gr3 4> MOQ:100pcs Round Head Titanium Self-tapping Screw 1. Specification 1> Standard : ASTMB348,ASTMF136,ASTMF67 ... medical part, automotive and bike,seawater treatment plant, offshore drilling rig, vessel and other marine-based vehicle, etc..3 ... also manufacture titanium cylindrical screw, titanium head screw, titanium pan head screw , titanium square head screw titanium hexagon srew, titanium ...