From the Ministry of Science, Industry and Technology:  
 
COMMUNIQUÉ ON  
TS 12435 HEXAGON HEAD BOLTS WİTH HEXAGON NUT  
FOR STEEL    STRUCTURES   
(COMMUNIQUÉ NO: MSG - MS - 2017/   ) 
 
 
Purpose   
           ARTICLE 1 – (1) The  purpose of this Communiqué is to identify issues related to the 
implementation of TS 12435 (March 2016) standard.  
 
Scope  of this standard  
ARTICLE 2 – (1) This standard specifies requirements for M12 to M30 hexagon 
head bolts for supply with hexagon nut, a ssign to product grade C, for use in structural steel 
bolting. Besides, this standard covers nuts and washers to be used. Additional rules described 
in Annex A are acceptable.  
Besides, hexagonal bolts appropriate to this standard are suitable for use in  aluminium 
construction and composite contruction.  
 
Legal Basis     
ARTICLE 3 – (1) This  Communiqué has been drawn up based on the Decree Law 
No. 635 on Organisation and Duties of the Ministry of Science, Industry and Technology 
dated 3/6/2011; Law No. 170 5 on the Prevention of Adulteration in Trade and Supervision 
and Protection of Exports dated 10/6/1930; Law No. 132 establishing Turkish Standards 
Institution dated 18/11/1960 and Regulation on Mutual Recognition in Non -regulated Areas 
that was published i n the Official Gazette No. 28332 dated 23/6/2012 and put into force with 
the Decision No. 2012/3169 of the Council of Ministers dated 2/5/2012.  
 
Putting into Effect  
  ARTICLE 4 – (1) TS 12435  ‘‘ Hexagon Head Bolts For Structural Steel Bolting For 
Supply With Nut”  standard  is canceled. Instead TS 12435 (March 2016)  Hexagon head bolts 
with hexagon nut for steel structures  ’’ was adopted and decided to be published in the 
meeting of Technical Board of Turkish Standards In stitution (TSE) dated 24/03/201 6 has 
been put into effect as mandatory in manufacturing and sales stages.  
 
Compliance Obligation  
ARTICLE 5 – (1) Those who produce and sell products within the scope of TS 1 2435  
(March 2016 ) standard shall be obliged to comply with the provisions of this Communiqué.  
 
 
 Mutual Recognition Clause  
ARTICLE 6 – (1)  The provisions of this Communiqué on ‘‘TS 12435 (March 2016)  
Hexagon head bolts with hexagon nut for steel structu res ’’ shall not apply to the products 
which were legally produced or put into free circulation in a Member State of the European 
Union.  
            (2) Nonetheless, the Ministry of Science, Industry and Technology may submit the 
product referred to in paragraph  (1) to an evaluation following the rules and procedures laid 
down in Chapter Three of Regulation on Mutual Recognition in Non -Harmonised Area and as 
a result of this evaluation if it finds out that this product does not provide a level of protection 
equiv alent to that sought by this Communiqué on ‘‘TS 12435 (March 2016)   Hexagon head 
bolts with hexagon nut for steel structu res’’ it may prohibit placing on the market of the 
product, make its placing on the market subject to prior conditions or have the prod uct 
withdrawn or recalled from the market.  
 
Provision   
           ARTICLE 7 – (1) TS 1 2435  (March 2016 ) Standard shall be obtained from the central 
organization or provincial representative offices of TSE. Contact information can be accessed 
from the website of the TSE.  
 
Repeal  
           ARTICLE 8 – (1) TS 1 2435  (March 2016) s tandard  that was published in the Official 
Gazette No:  23453  and dated 04/9/1998  has been repealed.  
 
Entry into Force  
ARTICLE 9 – (1) This Communiqué shall enter into force six months after its 
publication.  
 
Enforcement  
           ARTICLE 10 – (1) The provisions of this Communiqué shall be enforced by the 
Minister of Science, Industry and Technology.