Bolt rods are made of plain AP 600 steel bar of ø18,3 mm according to ZN-97/AP-2 standard.

The rods vary in terms of shape and size of swelling at the bottom.
KE-3W and KE3-2K expansion shells of ø36 mm are the elements which set the bolt in the hole. The KE-3W shell consists of 3 serrated leaves and one plug while the KE3-2K shell consists of 3 serrated leaves and 2 plugs.
The following washer plates can be used with the bolts: square, square with a side hole, round, triangular and octagonal. The washer plates differ in press forming method and thickness.
The washers may have a conical or flat hole.
Washers with a side hole of ø 15 can be used for attaching elements of mining equipment.

They should be used if there is no hole in the rod. All the washers are made of 6mm plate.

Drill a hole of ø38 ± 0,5mm in diameter and length equal to the length of the bolt. Reassemble the bolt by placing the washer and shell on the rod. Place the boltin the hole and push until the washer rests against the rock surface. Turn the rod and as a result the shell expands in the hole. Tighten the bolt by applying at least 250 Nm torque in order to obtain the prestress of at least 30kN.

 Bolting System

Cable, resin and expansion bolts, bolting system for mining, tunneling and construction industry.

Wood Screw – Generally has an un-threaded portion of the shaft below the head. It is designed to attach two pieces of wood together.

Lag Screw (Lag Bolt) – Similar to a wood screw except that it is generally larger and it generally has a hexagonal head drive.

Sheet Metal Screw (Self-tapping Screw, thread cutting screws) - Has sharp threads that cut into a material such as sheet metal, plastic or wood. They are sometimes notched at the tip to aid in chip removal during thread cutting. The shaft is usually threaded up to the head. Sheet metal screws make excellent fasteners for attaching metal hardware to wood because the fully thread shaft provides good retention in wood.

Self-drilling screw (Teks(R) screw) - Similar to a sheet metal screw, but it has a drill-shaped point to cut through the substrate to eliminate the need for drilling a pilot hole. Designed for use in soft steel or other metals.

Drywall screw - Specialized screw with a bugle head that is designed to attach drywall to wood or metal studs, however it is a versatile construction fastener with many uses. The diameter of drywall screw threads is larger than the shaft diameter.

Particle Board Screw (Chipboard Screw) - Similar to a drywall screw except that it has a thinner shaft and provides better holding power in particle board.

Deck Screw - Similar to drywall screw except that it is has improved corrosion resistance and is generally supplied in a larger gauge.

Double ended screw (Dowel screw) - Similar to a wood screw but with two pointed ends and no head, used for making hidden joints between two pieces of wood.

Screw Eye(Eye Screw) - Screw with a looped head. Larger ones are sometimes call lag eye screws. Designed to be used as attachment point, particularly for something that is hung from it.

Superbolt, or Multi-Jackbolt Tensioner Alternative type of fastener that retrofits or replaces existing nuts, bolts, or studs. Tension in the bolt is developed by torquing individual jackbolts which are threaded through the body of the nut and push against a hardened washer.
Installation and removal of any size tensioner is achieved with hand tools, which can be advantageous when dealing with large diameter bolting applications.

Hanger Screw – A headless fastener that has machine screw threads on one end and self apling threads on the other designed to be driven into wood or another soft substrate.

Teks(R) is a registered trademark of ITW Buildex

Cap Screw (Hex Bolt) – In places the term is used interchangeably with bolt. In the past the term, “cap screw” was restricted to threaded fasteners with a shaft that is threaded all the way to the head, however this is now a non-standard usage.

Hex Cap Screw – Cap screw with a hexagonal head, designed to be driven by a wrench (spanner). An ASME B18.2.1 compliant cap screw has somewhat tighter tolerances than a hex bolt for the head height and the shaft length. The nature of the tolerance difference allows an ASME B18.2.1 hex cap screw to always fit where a hex bolt is installed but a hex bolt could be slightly too large to be used where a hex cap screw is designed in.

Hex Bolt - At times the term is used interchangeably with hex cap screw. An ASME B18.2.1 compliant hex bolt is built to different tolerances than a hex cap screw.

Socket Cap Screw – Cap screw with a hexagonal recessed drive (Allen), usually with a cylindrical head, but can also be found with a rounded button head or a countersunk flat head.

Machine screw - Generally a smaller fastener (less than 1/4 inch in diameter) threaded the entire length of its shaft that usually has a recessed drive type (slotted, Phillips, etc.).

Self Tapping Machine Screw – Similar to a machine screw except the lower part of the shaft is designed to cut threads as the screw is driven into an un-tapped hole. The advantage of this screw over a self tapping screw is that if the screw is reinstalled new threads are not cut as the screw is driven.

Set screw (grub screw) - Generally a headless screw but can be any screw used to fix a rotating part to a shaft. The set screw is driven through a threaded hole in the rotating part until it is tight against the shaft

Tap Bolt - A bolt that is threaded all the way to the head. An ASME B18.2.1 compliant tap bolt has the same tolerances as an ASME B18.2.1 compliant hex cap screw.

Stud - similar to a bolt but without the head. Studs are threaded on both ends. In some cases the entire length of the stud is threaded, while in other cases there will be an un-threaded section in the middle.

Eye Bolt – A bolt with a looped head.

Carriage Bolt (Coach Bolt) - Has a domed or countersunk head, and the shaft is topped by a short square section under the head. The square section grips into the part being fixed (typically wood), preventing the bolt from turning when the nut is tightened. A rib neck carriage bolt has several longitudinal ribs instead of the square section, to grip into a metal part being fixed.

Stove Bolt - Similar to a carriage bolt, but usually used in metal. It requires a square hole in the metal being bolted to prevent the bolt from turning.

Shoulder Screw - Screw used for revolving joints in mechanisms and linkages. The shaft of the screw is smooth and works as a bearing surface. There is a reduced diameter thread at the end of the cylindrical bearing surface.

Thumb Screw – A threaded fastener designed to be twisted into a tapped hole by hand without the use of tools.

Tension Control Bolt (TC Bolt) – Heavy duty bolt used in steel frame construction. The head is usually domed and is not designed to be driven. The end of the shaft has a spline on it which is engaged by a special power wrench which prevents the bolt from turning while the nut is tightened. When the appropriate torque is reached the spline shears off.