Surface bolt is a very popular
type of door bolt used to fasten doors. It is mounted in a door to lock
it in place. This type of bolt slides up into the jamb above the door,
and down into the threshold or floor below door. This bolt is more
suitable for double door, that is, where one door is kept locked in
place and the other door is the one which is mainly used. When needed,
the door locked can be opened. The surface bolt is designed for wood or
metal doors, either interior or exterior.
The surface bolts are always supplied with keeps or strikes for various
applications. The surface bolts are available in various sizes. The size
of the surface bolt usually range from 4" (102mm) to 10"
(254mm). There are plain looking surface bolts as well as ornamental or
architectural surface bolts. The size of the ornamental surface bolt
ranges from 8" (202 mm) to 24" (610 mm). The ornamental
surface bolts are suitable for heavy, long doors. These bolts are
available in a variety of finishes to match most door hardware.
Materials used in surface bolt
Surface bolt is made of various metals like:
- Brass
- Bronze
- Aluminum
- Steel
- Iron
