ANSI B18.5 T-head bolt [1]standards:ANSI B18.5,ASME B18.5 [2]material:carbon Steel ,Stainless steel [3]surface:zinc ANSI B18.5 T-head boltWe also supply hex head bolt, heavy hex structural bolt,hex fit bolt,hex flange bolt,flat countersunk square neck bolts,cup head nid bolts,single-head bolt,double head bolt.. ANSI B18.5 T-head bolt