半圆沉头螺栓  half round countersunk head bolt

沉头带榫螺栓  Flat countersunk nib bolts

沉头方颈螺栓  countersunk square neck bolt; Flat countersunk square neck bolts

沉头双榫螺栓  Flat countersunk double nib bolts

十二角螺栓头螺栓  twelve point head bolt

半沉头螺钉  raised countersunk head screw; oval head screw

沉头螺钉  Countersunk fastener; flat(countersunk)head screw; Screw-oval head; sunk screw

开槽半沉头螺钉  slotted raised countersunk (oval) head screw

开槽沉头螺钉  slotted countersunk (flat) head screw

内六角沉头螺钉  hexagon socket countersunk head cap head screw

十字槽沉头螺钉  cross recessed countersunk head screw

T头螺栓  tee bolt; T-head bolt; T-bolt

T形头螺栓  T-head bolt

T型头螺栓  hammer bit

白铁圆头螺栓  galvanized iron mushroom head bolt

半光埋头螺栓  semifinished countersunk head bolt

半圆头螺栓  cup head bolt; ball headed bolt; ball stud; snap head bolt; cup-headed bolt

扁圆头螺栓  buttonhead bolt; button-head(ed) bolt

叉头螺栓  jaw bolt