CE1 ANCHOR SCREWS FOR CONCRETE SKR | SKS | SKP
Why choose anchor screws for concrete instead of traditional expansion systems
SKR, SKS and SKP concrete anchors are a technical solution for fastening timber or steel elements onto concrete substrates, based on principles fundamentally different from traditional expansion anchor systems.
The special thread requires a small pilot hole and ensures secure fastening without generating expansion forces within the substrate, a key factor in preserving the integrity of the concrete, especially in cracked elements.
SKR, SKS and SKP anchor joints allow reduced edge distances and spacing, enabling more flexible and cost-effective positioning compared to traditional anchors.
Immediate loading capability allows loads to be applied without waiting time, significantly reducing installation and assembly time on site without compromising fastening quality.
The load transfer by thread shape ensures that loads acting on the anchor are transferred to the substrate mainly through geometric interaction, particularly through the diameter and thread profile, ensuring stable mechanical anchorage over time.
Seismic performance and compatibility of SKR, SKS and SKP concrete anchors in steel
SKR, SKS and SKP concrete anchors have fire resistance class R120, are certified for cracked and non-cracked concrete applications, and operate in seismic performance class C1 (M10–M16) and C2 (M12–M16), ensuring reliability in buildings located in seismic areas.
This certification is a critical requirement for projects in high-seismic zones, where the ability to absorb dynamic loads without performance degradation is essential.
SKR, SKS and SKP anchor screws for concrete operate according to the load transfer by thread shape principle: the loads acting on the anchor are transferred to the substrate mainly through geometric interaction, ensuring stable anchorage without the need for expansion forces that could damage fragile or cracked concrete.
This principle is particularly advantageous in concrete with microcracking, where expansion systems may prove ineffective or counter-productive.
These screws for concrete operate effectively in service classes SC1 and SC2, resist atmospheric corrosivity classes C1 and C2, and maintain structural integrity even with timber in wood corrosivity classes T1 and T2. Their versatility on concrete substrates according to EN 206:2013, combined with seismic certification, makes them the ideal solution for anchor joints in residential, commercial and infrastructure applications.
What is the correct pilot hole for SKR, SKS and SKP?
The special thread of SKR, SKS and SKP concrete anchors requires a precisely sized small-diameter pilot hole matched to the specific anchor diameter. Unlike expansion systems, the reduced pilot hole is sufficient because fastening occurs through load transfer by thread shape: the thread engages directly with the concrete without generating expansion forces, ensuring stability even in cracked concrete where traditional systems may fail.
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File CAD
SKR
| CODE | d₁
[mm]
|
L
[mm]
|
d₁
[in]
|
L
[in]
|
SW | pcs. |
DOP/DOC
|
|---|---|---|---|---|---|---|---|
| SKR8100 | 8 | 100 | 0.32 | 4'' | SW10 | 50 | |
| SKR1080 | 10 | 80 | 0.4 | 3 1/8'' | SW13 | 50 | |
| SKR10100 | 10 | 100 | 0.4 | 4'' | SW13 | 25 | |
| SKR10120 | 10 | 120 | 0.4 | 4 3/4'' | SW13 | 25 | |
| SKR1290 | 12 | 90 | 0.48 | 3 1/2'' | SW15 | 25 | |
| SKR12110 | 12 | 110 | 0.48 | 4 3/8'' | SW15 | 25 | |
| SKR12150 | 12 | 150 | 0.48 | 6'' | SW15 | 25 | |
| SKR12210 | 12 | 210 | 0.48 | 8 1/4'' | SW15 | 20 | |
| SKR12250 | 12 | 250 | 0.48 | 10'' | SW15 | 15 | |
| SKR12290 | 12 | 290 | 0.48 | 11 7/16'' | SW15 | 15 | |
| SKR16130 | 16 | 130 | 0.63 | 5 1/8'' | SW21 | 10 |
SKS
