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Bolt sleeves are used to protect bolts on hard surfaces like concrete and brick. They are used for deck installations and attaching pool covers. Expansion bolt sleeves are used for rock climbing and stone bolts are used for fastening stone structures. Anchor bolts come in different head designs.
When a bolt is placed on an extremely hard surface, a bolt sleeve may be required for protection. This sleeve is designed to support the bolt with a metal outer shell, providing a threaded surface for tightening. This type of sleeve is typically used in concrete and brick, which do not support drilling with a threaded bolt.
Bolt sleeves are often used for many deck installations. When a deck is mounted on a concrete or cinder block building, it must be connected with a bolt sleeve. This bolt is drilled into the concrete wall and provides a method of attaching the deck mounting boards.
Anchor bolts are also used for installing deck feet. The feet are the primary device of the structure to support the deck joist on the ground. Most of the bridge feet are attached to the concrete with special J-bolt sleeves. These bolts secure the bridge piles into the concrete foundation.
The bolt sleeve is typically used for applications that require drilling into concrete or stone material. A good example of this is a pool cover on a concrete surface. Anchor bolts are used to securely attach the pool cover to the concrete area.
An expansion bolt sleeve is a special sleeve that expands as the bolt is tightened. This design is similar to a picture frame wall mount screw. As the bolt is tightened, the outer sleeve expands into the drilled surface.
Climbers use special climbing pitons with an expanding mechanism. These rock climbing pitons have a collapsible sleeve that can be placed into small crevices within rocks. The bolt sleeve expands to ensure the bolt will not disengage under heavy weight. These climbing anchors are designed to support the climber in the event of a fall.
Stone bolts are special bolt sleeves used for fastening stone structures. This bolt sleeve is generally used in excavation and mining. Can be attached to a mesh fence to support rock structure and catch falling material.
Anchor bolts are available in many head designs. These include hex head, nut and screw designs. Head design typically depends on the desired implementation. Nut designs are stronger, but have a protruding head after tightening.
