Certificate of Approval

Swiss Federal Office for Civil Defence 

Infrastructure 

Approval no.: 

(shock loading test) 

Certificate of Approval 

BZS D 06-601 

Items subject to testing: Hilti safety anchors 

HSC-A / HSC-AR / HSC-I / HSC-IR 

Owner of the approval: Hilti Schweiz AG, 8134 Adliswil, Switzerland 

Valid until: 31.07.2016 

The instructions “Quality management for obligatory testing of components used in the field 

of civil defence” 1750-026, dated February 10, 2005, issued by the Swiss Federal Office for 

Civil Defence (BABS), form the basis for this approval. 

In accordance with the results of the practical tests and the assessment of the technical 

documentation, the items tested, as listed above, were found to fulfill the requirements of the 

Swiss Federal Office for Civil Defence for the basic level of protection. These items are 

hereby approved for use in Swiss civil defence installations. 

Observance of the applicable technical documents / installation instructions is mandatory for 

shock-resistant installation. 

The owner of the approval is responsible for the overall quality of the product. The testing of 

the items by BABS relates mainly to the specific requirements applicable to civil defence 

structures. 

This approval is based on the following documents from the Swiss Federal Office for Civil 

Defence (BABS), Laboratory Spiez, 3700 Spiez, Switzerland. 

• BABS test report, Laboratory Spiez, no. AGEW 2006-010 dated 27.06.2006 

• Technical documents and installation instructions (signed) 

By signing this certificate of approval, the owner of this approval acknowledges his 

responsibilities in accordance with the instructions contained within “Quality management for 

obligatory testing of components used in the field of civil defence”, 1750-026, dated February 

10, 2005. 

Special notes 

- The approval relates exclusively to the requirements of the standards documents or, 

respectively, documents concerning EMP protection and shock load resistance listed 

in the instructions “Quality management for obligatory testing of components used in 

the field of civil defence” 1750-026, dated February 10, 2005.

- The owner of the approval is solely responsible (product liability) for ensuring 

adherence to other technical specifications and generally applicable mandatory 

product-related regulations and technical standards regarding safety and the 

environment. 

- Any misuse or misleading use of this approval will result in its immediate withdrawal 

in accordance with the instructions mentioned above. 

This approval is valid only when signed by both the owner of the approval and the issuing 

office. 

Swiss Federal Office for Civil Defence 

Infrastructure 

Approval office 

Manager 

Werner Hunziker 

Place and date: Berne 

Attached: 

Test reports 

Technical documents 

Owner of the approval 

Place and date: 

Copy for information, to: 

BABS, Laboratory Spiez / ABC Civil Defence Technologies 

3700 Spiez

LABORATORY SPIEZ 

CH-3700 Spiez 

Switzerland 

Test Department for ABC Civil Defence Material Test Report 

Test report no.: AGEW 2006-011 

Page 1/9 

Applicant: Swiss Federal Office for Civil Defence, Civil Defence Infrastructure, 

3003 Berne 

Order: Testing Hilti HSC safety anchors from the Hilti Corporation, FL-9494, 

Schaan, for reliability under shock loading 

Summary: 14 Hilti HSC-A M8x40 safety anchors manufactured from galvanized 

steel (approval no.) BZS D 06-601) were tested on the 10-ton vertical 

shock testing system under dynamic loading when set in cracked 

concrete. 

Each anchor was subjected to two successive shock loads of 5.5 kN. 

Total displacement (slip) was within the 0.209 mm to 1.381 mm range. 

Spiez, June 27, 2006 

00610/BAK 

Signed : Author : 

LABORATORY SPIEZ LABORATORY SPIEZ LABORATORY SPIEZ 

ABC-Protection ABC-Protection ABC-Protection 

Manager Mechanical Actions Mechanical Actions 

Ed. Bingerli T. Friedrich K. Bachmann 

Enclosure: - European Technical Approvals ETA-02/0027; ETA-02/0028 

- Assessment no. 7517.02 from Bürkel Baumann Schuler, 8400 Winterthur 

Distribution: Laboratory Spiez, Certification Department [4 copies] 

The content of this test report refers only to the 

test subject / object. 

Without prior permission from the 

LABORATORY SPIEZ, no extracts but only the 

full text of this test report may be published.

Bürkel Baumann Schuler 

Ingenieure+Planer AG 

Gertrudstrasse 17 

CH-8400 Winterthur 

Telefon +41 52 260 07 10 

Telefax +41 52 260 07 20 

E-mail admin@bbs-ing.ch 

Assessment 

Client: Laboratory Spiez 

ABC Civil Defence Technologies 

Coordination Department 

3700 Spiez 

Switzerland 

Project/title: Hilti HSC / HSC-R safety anchor 

Assessment for approval 

Report no.: 7517.02 

Number of pages: 11 

Summary: The Hilti HSC safety anchor is a self-undercutting anchor 

featuring movement-controlled expansion. The anchor shock 

loading tests were carried out at the Laboratory Spiez on June 6, 

2006, using the galvanized steel version of the anchor. The 

anchor displayed rigid loadbearing characteristics typical for an 

undercut type of anchor and fulfilled the criteria required for 

approval of a shock-resistant anchor system. 

Winterthur, June 16, 2006 

The assessor: 

Daniel Schuler 

Dipl. Ing. FH SIA 

On the basis of this assessment and supported by test report 

AGEW 2006-11 issued by Laboratory Spiez as well as the 

European Technical Approvals ETA-02/0027 for galvanized 

steel anchors and ETA-02/0028 for stainless steel anchors, 

application is hereby made for approval of the Hilti HSC and 

Hilti HSC-R safety anchors for use in shock-resistant fastenings 

in accordance with Model 1 of the instructions of the Swiss 

Federal Office for Civil Defence.

Hilti HSC / HSC-R safety anchor Page 2 of 11 

Assessment report for approval Report no. 7517.02 

Contents 

1 Introduction 3 

1.1 Application and request for assessment 3 

1.2 Anchor shock load testing 3 

1.3 Basic principles 3 

2 Description of the anchor 4 

2.1 Appearance, function and installation procedure 4 

2.2 Anchor materials 4 

2.3 Anchor types 4 

2.4 Anchor sizes 5 

2.5 Anchor designations 5 

3 Tests, test results and their evaluation 6 

3.1 Test program 6 

3.2 Pull-out probability 6 

3.3 Displacement behavior 6 

3.4 Evaluation 7 

4 Application 7 

A1 Shock test results 9 

A1.1 Displacement values (original list) 9 

A1.2 Displacement value histogram 9 

A2 Distribution of displacement values 10 

A2.1 Distribution density 10 

A2.2 Distribution function 10 

A3 Displacement behavior characteristic curve 11 

Bürkel Baumann Schuler Ingenieure und Planer AG Gertrudstrasse 17 CH-8400 Winterthur � www.bbs-ing.ch



1 Introduction 

1.1 Application and request for assessment 

In the letter dated 17.02.2006, the company Hilti (Schweiz) AG, 8134 Adliswil, 

Switzerland, applied to the Swiss Federal Office for Civil Defence, Infrastructure 

(BABS IS), 3003 Berne, for extension of approval BZS D 00-233 for the Hilti HSC safety 

anchor. Consequently, BABS IS, in order BABS-IS 06-020 dated March 9, 2006, applied 

to the Swiss Federal Office for Civil Defence, Laboratory Spiez (BABS LS) for retesting 

of this anchor fastener. In the letter dated 26.04.2006, the coordinating department of 

Laboratory Spiez requested the assessors to draw up a test program for the anchor 

shock load testing. On the basis of the BABS report “Testing and approval of anchor 

systems”, dated May 5, 2006, the assessors prepared the test program, dated May 3, 

2006, for type acceptance testing of the Hilti HSC safety anchor system. 

1.2 Anchor shock load testing 

Testing department STS 055 of the Laboratory Spiez carried out the practical anchor 

shock load testing of the Hilti HSC safety anchor on June 6, 2006. The tests were carried 

out using galvanized (electroplated) steel anchors of the M8x40 size. The results of the 

anchor shock load tests are listed in test report AGEW no. 2006-011 issued by the 

testing department. 

1.3 Basic principles 

The basic principles applicable to practical anchor shock load testing and evaluation 

within the scope of this assessment are to be found in the report “Testing and approval 

of anchor systems” issued by the Swiss Federal Office for Civil Defence, dated May 5, 

2006, and in the European Technical Approval (ETA) documents listed below: 

– ETA-02/0027: 

Hilti HSC anchor, self-undercutting galvanized steel anchor in the sizes M6, M8, 

M10 and M12 for setting in concrete 

Period of validity: 20.09.2002 to 20.09.2007 

– ETA-02/0028: 

Hilti HSC-R anchor, self-undercutting stainless steel anchor in the sizes M6, M8, 

M10 and M12 for setting in concrete 

Period of validity 20.09.2002 to 20.09.2007 




2 Description of the anchor 

2.1 Appearance, function and installation procedure 

The Hilti HSC safety anchor is a self-undercutting anchor featuring movementcontrolled 

expansion. The internally threaded version of the anchor (HSC-I) consists of 

a tapered shank and expansion sleeve or, in the case of the externally threaded type 

(HSC-A), a tapered shank, expansion sleeve, a washer and a hexagonal nut. 

During installation, the anchor is set in a cylindrical hole created by drilling. The 

anchor expands as the expansion sleeve is forced over the tapered shank and, in doing 

so, forms an undercut in the wall of the hole. The anchor thus gains a secure keyed 

hold in the hole. 

Tapered shank Expansion sleeve Washer Hex. nut Tapered shank Expansion sleeve 

Fig. 1 Parts of the Hilti HSC safety anchor with external (HSC-A) and internal 

thread (HSC-I) 

2.2 Anchor materials 

The Hilti HSC safety anchor is available in various materials. The following versions of 

the anchor were tested for the purpose of this assessment: 

– Hilti HSC safety anchor 

Tapered shank, expansion sleeve, washer and hexagonal nut made from galvanized 

steel, with a minimum zinc coating thickness of 5 µm 

– Hilti HSC-R safety anchor 

Tapered shank, expansion sleeve, washer and hexagonal nut made from stainless 

steel, material no. 1.4401 or 1.4571 

2.3 Anchor types 

The Hilti HSC safety anchor is available as an externally threaded stud-type anchor or as 

an internally threaded sleeve-type anchor. Both anchor types, in galvanized steel and 

in stainless steel, are covered by this assessment: 

– HSC-A / HSC-AR stud anchor 

Stud-type anchor consisting of an externally threaded tapered shank, an expansion 

sleeve, a washer and a hexagonal nut. 

– HSC-I / HSC-IR internally threaded anchor 

Internally threaded anchor consisting of an internally threaded tapered sleeve and 

an expansion sleeve. 




2.4 Anchor sizes 

The HSC-A/HSC-AR stud anchor and the HSC-I/ HSC-IR internally threaded anchor 

are available in various sizes. The anchor sizes listed in the table below are covered by 

this assessment. 

Table 1 HSC-A / HSC-AR stud anchor sizes 

Anchor size Thread size Nominal drill bit 

diameter 

d0 [mm] 

Effective 

anchorage depth 

heff [mm] 

M8 x 40 M8 14 40 

M10 x 40 M10 16 40 

M8 x 50 M8 14 50 

M12 x 60 M12 18 60 

Table 2 HSC-I / HSC-IR internally threaded anchor sizes 

Anchor size Thread size Nominal drill bit 

diameter 

d0 [mm] 

Effective 


heff [mm] 

M6 x 40 M6 14 40 

M8 x 40 M8 16 40 

M10 x 50 M10 18 50 

M10 x 60 M12 18 60 

M12 x 60 M12 20 60 

2.5 Anchor designations 

The designations used for the Hilti HSC safety anchor are as shown in the example 

below and are given in the following order: Anchor designation, type designation, an R 

if the anchor is made from stainless steel, anchor size and fastenable height. 

HSC-AR M8x40/10 

Clamping thickness, i.e. fastenable height [mm] 

Effective anchorage depth [mm] 

Thread size 

Indicates stainless steel version 

Anchor type (A = externally threaded, I = internally threaded) 

Anchor designation 




3 Tests, test results and their evaluation 

3.1 Test program 

The anchor shock loading tests were carried out on June 6 and 7, 2006, in the testing 

department STS 055 of the Laboratory Spiez in accordance with the test program 

drawn up by the assessors on May 3, 2006. The test setup and the test program are 

documented in test report AGEW no. 2006-011 issued by the testing department. The 

shock loading tests were carried out on the department’s 10-ton vertical shock load 

testing rig (VESPA). 

The tests were carried out with galvanized steel stud anchors of the M8 size. During 

the tests, 14 stud anchors of the HSC-A M8x40 type were each subjected to two shock 

loads. The test load applied (shock load) was Ntest,shock = 5.5 kN. This load corresponds 

to the rated (design) load value under pure tensile loading for a concrete failure value 

of NRd,c for concrete C25/30 in accordance with the European Technical Approval 

(ETA). 

3.2 Pull-out probability 

None of the 14 anchors tested (NT = 14) were pulled out of the hole by the shock load 

(NF = 0). This means that for a confidence level of 50% (CN = 0.50), the minimum 

required pull-out probability value of 5% (PF = 0.05) was not exceeded. 

3.3 Displacement behavior 

After subjection to the two shock loads, 3 of the total of 14 stud anchors tested showed 

a total displacement (slip) of more than 2.0 mm and 3 anchors showed a total 

displacement of less than 1 mm. The other 8 showed displacements of between 1.0 mm 

and 2.0 mm. The minimum displacement was 0.2 mm. With 2 of the anchors, a total 

displacement of 2.8 mm was measured. The displacement values and the histogram for 

the 1st and 2nd displacement values can be found in appendix A1. 

The distribution calculated on the basis of displacement value s1 for the 1 st shock load 

is described on the basis of the following parameters: 

– Distribution type: Log normal 

– Mean value for 1 st displacement: s1,m = 0.4 mm 

– Standard deviation: σ1 = 0.3 mm 

The characteristic displacement s1,k calculated on the basis of this distribution is given 

below. It corresponds to the 95% fractile value, i.e. it will not be exceeded in 95% of 

cases where the anchors are subjected to the given shock load. 

– Characteristic 1 st displacement: s1,k = 0.8 mm 




The distribution density (pdf) and the distribution function (cdf) for the displacements 

after the first and second shock loads are listed in appendix A2. 

The displacement mean value ratio calculated from mean values of the 1 st and 2 nd 

displacements which, in particular, provides a measure of the follow-up expansion of 

the anchor system, is only slightly higher than 1.0. 

– Displacement mean value ratio: s1,m/s2,m = 1.7 

The characteristic curve formed from the standard deviation of the 1 st displacement σ1, 

the characteristic 1 st displacement s1,k and the displacement mean value ratio s1,m/s2,m, is 

shown in appendix A3. 

3.4 Evaluation 

The Hilti HSC / HSC-R safety anchor fulfills the shock load criteria both in terms of pullout 

probability and displacement behavior. The rigid loadbearing characteristics 

displayed by the anchor under shock loading are typical for an undercut-type anchor. 

This behavior is also evident from the displacement characteristic curve shown in 

appendix A3. 

The displacement values are very low after both the first and second shock loads. 

Evaluation of the displacements occurring during shock loading also shows that 

follow-up expansion of the anchor is only slight. As expansion of the type of anchor 

tested is movement-controlled, follow-up expansion is possible only to a very limited 

extent. Accordingly, the slightly lower displacement values after the second shock load 

are a result of the anchor “seating” itself in the hole when the first shock load is 

applied. The displacement values are much lower compared to the values obtained in 

tests with the same type of anchor carried out in the year 2000 with a lower shock load. 

This is probably due to the acceleration values applicable to the tests. This figure was 

18 g during the tests carried out 6 years ago. For the current tests, however, an 

acceleration of only 11 g was required due to the heavier test block. 

4 Application 

An application is to be made for approval of the Hilti HSC / HSC-R safety anchor under 

shock loading in accordance with model 1 of 1750-026, “Quality management for 

obligatory testing of components used in the field of civil defence”, dated February 

2006 and issued by the Swiss Federal Office for Civil Defence on FEb,10, 2005. The 

approval applied for is based on the European Technical Approvals ETA-02/0027 and 

ETA-02/0028 for the anchor versions in galvanized steel and stainless steel 

The values given for loading capacity under pure tensile loading for a concrete failure 

value of NRd,c for concrete C25/30 in accordance with the European Technical Approval 

(ETA) are to be taken to represent the permissible shock load capacity Radm,shock. The 

permissible shock loading capacities for the various anchor types and sizes are given in 

the following table: 




Table 3 Permissible shock loading capacities for the various anchor types and sizes 

Anchor type Anchor size 

HSC-A / HSC-AR M8x40 M10x40 M8x50 M12x60 

HSC-I / HSC-IR M6x40 M8x40 M10x50 M10x60 M12x60 

Drill bit 

nominal diameter 

Effective 


Permissible shock 

loading capacity 

d0 

[mm] 

heff 

[mm] 

Radm,shock 

[kN] 

14 16 14 18 18 20 

40 40 50 50 60 60 

5.5 5.5 7.7 7.7 10.2 10.2 




A1 Shock test results 

A1.1 Displacement values (original list) 

No. s1 s2 stot No. s1 s2 stot No. s1 s2 stot 

1 0.449 0.377 0.826 21 41 

2 0.470 0.848 1.318 22 42 

3 0.532 0.432 0.964 23 43 

4 0.532 0.079 0.602 24 44 

5 0.686 0.090 0.776 25 45 

6 0.251 0.103 0.354 26 46 

7 0.737 0.072 0.809 27 47 

8 0.115 0.240 0.355 28 48 

9 0.197 0.012 0.209 29 49 

10 0.134 0.213 0.347 30 50 

11 0.489 0.032 0.521 31 51 

12 0.260 0.257 0.517 32 52 

13 0.167 0.106 0.273 33 53 

14 0.214 0.032 0.246 34 54 

15 35 55 

16 36 56 

17 37 57 

18 38 58 

19 39 59 

20 40 60 

A1.2 Displacement value histogram 

Number 

Number 

35 

30 

25 

20 

15 

10 

5 

0 

0 2 4 6 8 10 12 

35 

30 

25 

20 

15 

10 

5 

Displacement after 1st shock load [mm] 

0 

0 2 4 6 8 10 12 

Displacement after 2nd shock load [mm] 




A2 Distribution of displacement values 

Type of distribution : Log-normal 

Mean value 1 st displacement : s1,m = 0.4 mm 

Standard deviation 1 st displacement : σ1 = 0.3 mm 

A2.1 Distribution density 

4.50 

4.00 

3.50 

3.00 

2.50 

pdf 

2.00 

1.50 

1.00 

0.50 

0.00 

2nd displacement 

1st displacement 

0 2 4 6 8 10 

Displacement s [mm] 

A2.2 Distribution function 

1.00 

0.80 

0.60 

cdf 

0.40 

0.20 

0.00 

2nd displacement 

1st displacement 

0 1 2 3 4 5 6 7 8 9 10 

Displacement s [mm] 




A3 Displacement behavior characteristic curve 

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