A Through bolt also known as an expansion anchor that is a steel (stainless or galvanised usually) insert used to enable the attachment of a screw in material that is porous or brittle or that would otherwise not support the weight of the object attached with the screw. These wall plugs are a type of anchor that, for example, allows screws to be fitted into concrete walls (possibly solid brick masonry as well).
This anchor is inserted loosely into a drilled hole, then a screw is tightened onto the fitting drawing it out of the wall. As the fitting tries to emerge, the anchor portion expands conforming tightly to the wall material. Such anchors can attach one object to another in situations where screws, nails, adhesives, or other simple fasteners are either impractical or ineffective. Different types have different levels of strength and can be used on different types of surfaces.
Please note that these anchors work well in all directions of force – both shear force and direct tension in-line with the through bolt.
Features & Benefits:
- Small hole size
- Easily trimmed to length once installed
- Thread: M6
- Coating: None
- Grade: AISI 316
- Material: Stainless Steel