Ancon Reinforcing Bar Couplers Range

Tapered Thread
The Ancon range of Tapered Thread couplers is designed to suit the
majority of applications which call for the joining of reinforcing bars.
Available to suit bar sizes 12mm to 40mm, the couplers are installed
quickly and easily on site without the need for specially trained
personnel or specialised, expensive machinery.
The compact design of each coupler ensures suitability for use in confined situations where space
is restricted or where the loss of cover must be minimised. The couplers are normally supplied
fitted to the end of threaded bar, requiring only the engagement and tightening of the adjoining
bar on site. In order to ensure correct installation, we specify the use of a torque wrench.
The range of Tapered Thread couplers is available through major rebar suppliers

Standard Coupler
The Standard Tapered Thread coupler is suitable for connecting two bars of the same diameter,
where one bar can be rotated. It comprises an internally threaded sleeve with two right hand
threads which are tapered towards the middle of the coupler. The bar ends are square cut and
a tapered thread is cut onto the bar. A nominal allowance of +25mm should be allowed per
threaded bar end for square cutting the bar end.
The couplers are generally torqued onto the reinforcing bar in the bar threading shop, the internal
threads protected by plastic end caps. The threaded ends of the continuation bar are protected
by plastic thread protectors.
Engagement of the bar within the coupler is simplified by the tapered thread design which aids
alignment. When the bar is fully engaged within the coupler, the continuation bar is tightened
using a torque wrench.
The Ancon Standard Tapered Thread coupler is compliant with BS 8597: 2015 Steels for
the Reinforcement of Concrete. Reinforcement Couplers. Requirements and Test Methods.
They are designed to achieve failure loads in excess of 115% of the characteristic strength of
grade 500 rebar.

Positional Coupler
The Ancon Tapered Thread Positional coupler is designed to be used
in applications in which neither bar can be rotated. Having a degree
of adjustability, the Positional coupler can also be used as a closer
between two fixed bars.
The Positional coupler comprises three components, a male section, a female section and a
locking nut. The male component has an internal tapered thread and an extended external parallel
thread. The female component has a parallel thread and a tapered thread, both of which are
internal. A locknut is used to secure the connection when the correct degree of adjustability has
been achieved. All components, including the locknut must be tightened using a torque wrench.
Plastic thread protectors are used to prevent damage to the threaded bar ends and the internal
threads of the couplers are protected by plastic end caps. A nominal allowance of +25mm should
be allowed per threaded bar end for square cutting the bar end

Testing & Approvals
The Positional range of Tapered Thread couplers has been tested and approved by UK CARES to
show compliance with the requirements of BS EN 1992-1-1: 2004 (Eurocode 2), BS 8110 and UK
CARES TA1-B. This range is also compliant with BS 8597: 2015.

Transition Coupler
The Ancon Tapered Thread
Transition coupler is used to
join reinforcing bars of different
diameters where one coupler
can be rotated.
With all the benefits of the Standard range,
Transition couplers are designed to achieve
failure loads greater than 115% of
the characteristic strength of the
smaller diameter grade 500
reinforcing bar.
The Transition coupler
comprises an internally
threaded sleeve with two
right hand threads both of
which are tapered towards
the middle of the coupler.
The diameter of each thread
corresponds to the appropriate bar size.
A nominal +25mm should be allowed per
threaded bar end for square cutting the bar end.