In this blog we will be looking at the different types of bolts; what makes them different, how they work, etc.
There are 4 main types of bolts that we stock. Barza bolts, flush bolts, barrel bolts and neck bolts, each of these have differences.
Barza Bolts
A barza bolt is one of the most secure bolts, originally designed for Hackney council as a high security bolt. They do not have any visible screws which anyone could unscrew with a screwdriver, and it can only be removed with a special remover tool, which works by sliding in behind the bolt and releasing it from the plate.
The bolt itself slides on to a plate which attaches to the door, and will not slide back off, it just allows a small amount of movement in order for the bolt to function.
Barza bolts are traditionally used in schools and colleges, however there is a growing demand for barza bolts in healthcare and sheltered accommodation. They are particularly suitable for those with dexterity problems, as they have a large knob, used to function the bolt.
Flush Bolts
Flush bolts are designed to be cut into the edge of a door, so that they are ‘flush’ to the surface. Flush bolts are suitable for use on timber doors, however adding an intumescent pack allows these bolts to be used on fire doors too. Flush bolts come supplied with a keep to catch the bolt.
The Bolt is operated with a lever action, which causes the bolt to move either up or down, this secures the door from moving.
Barrel Bolts
Barrel bolts are a straight bolt which are good for going into a floor or a thick frame, when there is enough space, in this case you would not use the keep and would cut in to the frame or floor. Alternatively, you can use the keep which sits in line with the bolt and is attached to the surface with screws which are visible.
Neck Bolts
Neck bolts function in the same way as a barrel bolt, however they have a cranked bolt and work better with different fixing points, such as the header or a frame around a gate or door. The keep is recessed, so that the bolt fits in to a hole in the frame, neck bolts do not come with a surface keep.
If you have any further questions or require any more information on our other products, do not hesitate to give us a call or e-mail us.