ANSI hex head wood screws 1/4*2-1/2 (+3 Cr) 1.standard:ANSI 2.material:35ACr 3.grade:5 4. ... ,zinc plating ANSI hex head wood screws 1/4*2-1/2 (+3 Cr)1.Metail:Carbon steel,stainless steel,35CrMo,35#. ... etc.2.Size:1/4-1inch3.Standards:DIN ,ANSI/ASME,BS,GB,JIS, ... Non-standard,JB/T4.Surface:plain,zinc plated,black oxide,hot dip galv ...