MTP-X Wedge Anchor

Wedge anchor for cracked concrete with European ETA1 approval — for seismic loads, sprinkler systems and dynamic loads.

ETA1 — Cracked concreteSeismic C1-C2Fire rating F120Sprinklers — VdSDynamic loads

The Adit wedge anchor family

Choose the right wedge anchor for your substrate, environment and approval requirements.

MTP-XCracked concrete · ETA1 · Seismic
MTP-GHot-dip galvanized · Outdoor & marine
MTP A4Stainless steel SS316 · Cracked concrete
MTHUncracked concrete · ETA7
MTH A4Stainless steel SS316 · Uncracked ORAZinc-plated · Standards Institute lab test

Technical specification

Property	MTP-X — wedge anchor, European approval
Characteristics	Wedge anchor for cracked and uncracked concrete
Technology	Wedge anchor (expansion)
Corrosion protection	Zinc electroplated (cold galvanized)
Cracked concrete	Yes
Dynamic loads	Yes
Seismic	Yes — C1 and C2
Fire rating	Yes — F120
Sprinklers	Yes — VdS approval
Standards	European Technical Assessment ETA1 for cracked concrete, sprinklers and seismic applications

Downloads

Proven in the field — selected projects in Israel

The MTP-X wedge anchor is installed in hundreds of projects across Israel.

Steimatzky Logistics, Rosh HaAyin

M Tower Beer Sheva

Gindi Towers Tel Aviv

LYFE Towers Bnei Brak

GIBOR Tower Ramat Gan

Balcony Addition, Modi’in

HaMelacha Retail & Offices, Netanya

Ministry of Justice, Jerusalem

Rubinstein Towers Tel Aviv

Worker Towers Holon

A-Tower Ra’anana

ECO Tower Tel Aviv

AMDOCS Building Ra’anana

Totzeret HaAretz Tel Aviv

Science Park Rehovot (STRATASYS)

View all projects →

Instructional & field-test videos

Wedge anchor (conical anchor): the complete guide

Everything you need to know about the wedge anchor — the leading European mechanical anchoring solution — from the working principle, through installation, all the way to the largest projects. This guide was written by the experts at Adit Ltd., the largest anchoring and fastening company in Israel.

What is a wedge anchor (conical anchor)?

The wedge anchor (also known professionally as a conical anchor) is a steel mechanical anchor that meets a stringent European standard, manufactured through a rigorous, controlled production process. With decades of experience and installations worldwide, the wedge anchor proves its durability time and again under especially demanding field conditions.

How does it work?

The wedge anchor fastens steel structures, installations and heavy equipment to concrete through an advanced mechanical expansion mechanism. After the hole is drilled and the anchor is inserted, tightening the nut opens the lower expansion clip (the “skirt”), which is set and driven toward the cone. This action creates a strong, rigid and secure anchorage capable of carrying very high tensile and shear loads. Thanks to quick and simple installation, high reliability and enormous load-bearing capacity, wedge anchors are among the most common anchoring solutions in construction and industry.

Key advantages of the ADIT MTP-X wedge anchor

Approved for cracked concrete: the ADIT MTP-X is specifically designed and approved as a wedge anchor for cracked concrete and for seismic conditions.
Fast and simple installation: significant savings in on-site labor time.
High load capacity: excellent tensile and shear performance for heavy-duty projects.
Immediate loading: unlike a chemical anchor, there is no need to wait for curing — load can be applied immediately after tightening the nut.
Economical and reliable: excellent cost-effectiveness that enables significant savings in the project budget.
Wide range: available in a variety of diameters and lengths for a precise fit to every professional application.

What is cracked concrete and why does it matter?

Cracked concrete is a common engineering condition in which there is a high probability of a microscopic crack (up to 0.3 mm) forming in the tension zone of the concrete, precisely where the anchor is installed. This crack may develop as a result of tensile loads, structural settlement, temperature changes, earthquakes, or the force exerted by the anchor.

Whenever the engineering design defines the connection area as a “tension zone” or as “cracked concrete”, it is mandatory to use a wedge anchor for cracked concrete. An ordinary anchor may loosen and lose its holding power when a crack widens nearby. By contrast, a wedge anchor for cracked concrete such as the MTP-X is equipped with a special, flexible expansion mechanism that “rides” on the cone and adapts to the opening of the crack, ensuring the anchorage remains stable and durable over time.

The MTP-X wedge anchor — why choose us?

European standard and uncompromising quality (ETA): meticulous manufacturing that guarantees compliance with the most stringent standards in the global and Israeli construction industry.
Safety and installation accuracy: a unique system for easily verifying installation depth via a marking embossed on the anchor head prevents human error in the field.
Outstanding design flexibility: a very wide range of installation depths that adapts to any structural requirement.
Exceptional performance at edge distances: the cone structure provides excellent load distribution, enabling safe design close to the concrete edge and in congested locations.
Environmental durability: a high-quality zinc-electroplated (cold galvanized) coating, with more resistant versions available for corrosion-prone locations.
Knowledge, experience and engineering support: full backing from the most experienced team in the country, including calculation support and professional advice.

Common applications for the wedge anchor

Curtain walls and structural cladding.
Safety railings and balconies.
Heavy steel structures fastened to concrete buildings.
Vibrating machinery and heavy industrial equipment.
Pipe runs, ventilation ducts and service systems in ceilings.
Storage and logistics facilities and heavy-duty racking systems.
Steel columns, pergolas, electrical cabinets and communications equipment.

Frequently asked questions

What is the difference between MTP and MTH?

MTP (ETA1) is approved for cracked and uncracked concrete, for C1-C2 seismic conditions, for sprinklers and for dynamic loads. MTH (ETA7) is approved for uncracked concrete only, with no seismic approval. If the design requires cracked concrete or seismic resistance, MTP is mandatory.

Which finish should you choose?

Zinc electroplated (cold galvanized) (MTP-X / MTH) for dry indoor environments. Thermal-diffusion galvanizing 30-40 micron (MTP-G) for outdoors, the seashore and humidity. Stainless steel SS316 (MTP A4 / MTH A4) for especially aggressive environments — swimming pools and the food and chemical industries.

What is a wedge anchor?

A wedge anchor is a through-fixing expansion anchor: you drill a hole, insert the anchor through the fixture, and tighten the nut. Tightening pulls the cone into the sleeve, the sleeve expands and locks the anchor into the wall of the drilled hole.

What is the difference between a wedge anchor and a conical anchor?

There is no difference. “Conical anchor” is simply the professional engineering name for a wedge anchor, describing the cone shape at the end of the bolt on which the expansion clip (the “skirt”) rides.

When should you use a wedge anchor instead of a chemical anchor?

The enormous advantage of a wedge anchor is the speed of work: once you have drilled the hole and tightened the nut to the correct torque, the anchor is immediately ready to carry a full load. With a chemical anchor you must wait hours for the material to set. For a dry, clean installation on hard, stable concrete under a tight schedule, the wedge anchor is the most economical and efficient solution.

Is it mandatory to clean the drilled hole before inserting a wedge anchor?

Yes. Although a mechanical anchor is somewhat more forgiving of dust than a chemical anchor, drilling dust at the bottom of the hole will prevent the anchor from reaching the required installation depth and may interfere with the proper opening of the expansion clip. Always vacuum or blow out the dust before inserting the anchor.

How do I know whether I need a wedge anchor for cracked concrete or a regular one?

Cracked concrete does not mean the concrete is broken to the naked eye, but that it is in a zone of tensile stress that can create micro-cracks around the anchor. According to the European standard and the new Israeli standard, most ceilings, suspended floors and areas subject to dynamic loads and earthquakes are defined as cracked concrete. Unless the structural engineer states otherwise, the safe choice is a wedge anchor for cracked concrete such as the MTP-X.

How do you correctly install a wedge anchor in concrete?

Installation is simple and takes less than a minute: 1. Drill a hole at the exact diameter of the anchor. 2. Clean the drilling dust out of the hole. 3. Insert the anchor (with the nut and washer fitted on it to protect the thread) using a hammer, up to the marked depth. 4. Tighten the nut with a torque wrench to the exact value in the manufacturer’s instructions. Over-tightening may damage the anchor or the concrete.

Is it permitted to install a wedge anchor in a block wall?

No. A wedge anchor generates enormous expansion pressure on the walls of the drilled hole. Installing it in a hollow block, a concrete-masonry block or lightweight concrete (Ytong) will cause the block to burst from the inside and the anchor will pull out easily. For blocks, use a suitable plastic plug, dedicated block anchors, or a chemical anchor with a mesh sleeve.

Is the MTP-X wedge anchor earthquake-resistant?

Yes. The MTP-X model holds the most stringent engineering approvals in Europe (ETA), including seismic approval in categories C1 and C2 — highly important for public engineering projects and infrastructure buildings.

Not sure which wedge anchor is right for you? Tell us the concrete type, the load and the environment — our engineers will recommend the correct model, diameter and finish.

Talk to our engineers