General
Degree of protection	Hot dip galvanized
Hammer foot bracket material	Steel
Zinc coating for hammer foot brackets	Hot-dip galvanized
Zinc coating standard for hammer foot bracket	DIN EN ISO 1461
Material for pressure chamber	Polypropylene
Pressure chamber properties	halogen-free, with UV protection
Ink tray color tone	Black
Tray insert material	Steel
Zinc coating for tray insert	Continuously galvanized
Zinc coating standard for tray insert	DIN EN 10346
Screw	Screw pin M 6
Screw drive	Multi-drive
Cable diameter	28 - 34 mm
Assignment	1 cable
Utilization	C-profile rails
Slot width C-profile rail	16 - 17 mm

The Niedax BK 34 is a hammer-head strap clamp designed specifically for securing cables with a diameter of 28 to 34 mm to C-profile rails. The clamp consists of a hot-dip galvanized steel strap, offering high mechanical strength and corrosion resistance, as well as a polypropylene (PP) plastic pressure insert, which is halogen-free and UV-protected. The pressure insert is black and ensures even load distribution and protects the cable jacket from damage. The clamp is supplied with an M 6 stud screw featuring a multi-drive head, enabling secure and efficient installation. It is used on C-profile rails with a slot width of 16 to 17 mm, ensuring universal compatibility with common support systems in electrical and IT installations.

Mounting technology
The hammer-head strap clamp operates on the principle of pressure anchoring: the steel strap is placed over the cable and tightened with the pressure insert and stud screw. The pressure insert ensures even force distribution across the cable, minimizing the risk of material fatigue or jacket damage. The use of hot-dip galvanized steel for the strap and strip-galvanized steel for the insert ensures long service life, even in damp or corrosive environments. The multi-drive screw allows for quick and secure installation, especially in series mounting applications.

Applications
The BK 34 is intended for use in electrical and IT installations, particularly in areas where cables must be secured to C-profile rails. Typical applications include building installations, industrial facilities, server rooms, or data centers, where stable and durable cable fixation is required. The clamp is suitable for cables with a diameter of 28 to 34 mm, with precise fit ensured by the elastic shape of the pressure insert. Its compatibility with C-profile rails having a slot width of 16 to 17 mm makes it suitable for common support systems in the trade.

Functions and equipment in detail
The clamp includes all necessary components for direct installation: hammer-head strap made of hot-dip galvanized steel, plastic pressure insert made of PP with UV protection and black color, and an M 6 stud screw with multi-drive head. The pressure insert is halogen-free, meaning lower toxicity during disposal and in case of fire. The insert made of strip-galvanized steel provides additional stability and contributes to load distribution. The multi-drive screw allows the use of various tools, making installation more flexible.

Compatibility and accessories
The BK 34 is designed for C-profile rails with a slot width of 16 to 17 mm. These counter inserts are designed for cable diameters of 28 to 34 mm and enable secure and durable anchoring. Combining the clamp with matching counter inserts is recommended particularly for permanent installations or in environments with increased mechanical stress.

Installation and mounting
Installation is carried out by inserting the cable into the hammer-head strap, attaching the pressure insert, and tightening the M 6 stud screw. The screw is tightened using a suitable tool (e.g., screwdriver or Allen key), with the multi-drive design allowing the use of various tools. The clamp is inserted into the slot of the C-profile rail and fixed by the clamping force of the screw.

Operational advantages
The BK 34 provides reliable and durable cable fixation that remains stable even under mechanical stress. The use of hot-dip galvanized steel and UV-resistant PP ensures high corrosion resistance and long service life. The pressure insert protects the cable jacket material from damage, extending the cable’s lifespan. Installation is quick and easy, especially in series installations, thanks to the multi-drive screw. Compatibility with common C-profile rails makes the clamp universally applicable in various installation scenarios.