Ancon STS Balcony Connectors

Ancon STS Balcony Connectors

Third party certifications:
  • QA Certificate

    QA Certificate

    Certificate type


Thermally-insulated, steel-to-steel balcony connectors.

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A compact thermal break, typically used for connecting steel balconies to structural steel frames, which is equally suitable for other steel-to-steel applications.

The connectors comprise tension and compression components within a single combined unit, wrapped in class A1 non-combustible mineral wool insulation. The fabricated compression component is manufactured from either grade 304 (1.4301) stainless steel referenced SSTS or hot-dip galvanised S355 plain carbon steel referenced STS. Stainless steel offers the greater thermal efficiency and is essential for applications requiring enhanced corrosion protection such as coastal areas.

The fabricated elements are designed to EN 1993 (Eurocode 3) and CE marked to BS EN 1090-1. It is available in three standard stud sizes to accommodate a wide range of loads. Manufactured to order, the vertical centres of the four A4 stainless steel fixing studs can be specified to suit the exact requirements of the application. A thermal plate, with an independently verified European reaction-to fire classification of A2-s1,d0, is located at each steel interface.


  • Comprises materials of class A1/A2 combustibility only, ideal for high-rise construction.
  • Proven through thermal modelling to reduce heat loss and eliminate condensation risk.
  • Thermal pad located at each steel interface.
  • Bracket fabrication CE marked to BS EN 1090-1.
  • Variable fixing heights to suit application.
  • In the case of SSTS, fully stainless steel components offer the ultimate corrosion protection and thermal efficiency benefits.

General information

Uniclass 2015

Pr_20_85_09_16 Carbon steel masonry bracketsPrimary


G10/304 Proprietary bolt assemblies

G10/40 Bolt assemblies

Specification data - Carbon steel masonry brackets

Product Reference


Carbon steel.


Carbon steel.


Carbon steel.


Stainless steel.


Stainless steel.


Stainless steel.

Compression component

Galvanized carbon steel

Stainless steel

Horizontal bolt centres


Not STS 24A.


STS 24A only.

Standard product features

Insulation thickness:

86 mm.

Product Options

Product Reference:

– STS 16A/ SSTS 16A:

  • Width: 180 mm.
  • Bolt centres (horizontal): 100 mm.
  • Fixings: M16 bolts with 24 A/F nuts.

– STS 20A/ SSTS 20A:

  • Width: 180 mm.
  • Bolt centres (horizontal): 100 mm.
  • Fixings: M20 bolts with 30 A/F nuts.

– STS 24A/ SSTS 24A:

  • Width: 190 mm.
  • Bolt centres (horizontal): 115 mm.
  • Fixings: M24 bolts with 36 A/F nuts.

Third party certifications
  • CE marked: to BS EN 1090-1