Concrete bolts, also known as anchor bolts or masonry bolts, are heavy-duty fasteners designed to secure objects to concrete surfaces. Here are some key points about them:

Types of Concrete Bolts:
Screw Bolts: These are threaded bolts that can be screwed directly into pre-drilled holes in concrete.
Anchor Bolts: These are used for more substantial load-bearing applications and often require a nut and washer to secure the fixture.

Materials and Coatings:
Typically made from steel, with coatings such as zinc or galvanization to prevent rust and corrosion.
Stainless steel options are also available for higher corrosion resistance.

Applications:
Used for securing structural and non-structural elements like beams, columns, and heavy machinery to concrete.
Suitable for use in concrete, brick, blockwork, stone, and timber.

Installation Tips:
Pre-drill the appropriate size hole using a masonry bit.
Clean out the hole to ensure a secure fit.
Insert the bolt and tighten it to the required torque.