Nylon Screw In Plastic Spiral Expansion Anchors Self Drilling Insulation Fixing Plugs Thin Profile for Shallow Depth Panel Product Description The Thin Profile Nylon Screw-In Plastic Spiral Expansion Anchor is engineered for shallow depth panel applications where standard anchor lengths would protrude through the back of the panel. With ultra-short body lengths of just 15 mm to 25 mm and diameters of 6 mm and 8 mm, this anchor provides a reliable fixing point in thin panels,