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Starter Bar

Ancon Starter Bar

Starter Bar System

The Ancon Starter Bar system is designed to increase the speed of construction at joints where continuity of reinforcement is required, or for fixing applications using standard metric bolts or studding.

Ancon Starter Bar System

The system incorporates either a tapered thread coupler, approved by UK CARES, or a parallel thread adaptor. Use of this system can simplify concrete design and eliminate the need to drill formwork or concrete.

All bars are grade 500 and are cropped and bent to BS 8666: 2005.


Ancon tapered thread couplers are approved by UK CARES for compliance with the requirements of BS 8110. The Starter Bar System is manufactured using CARES approved reinforcing bar.

System Components

The Starter Bar is the female component of the system. It consists of a bar, normally threaded at one end only, supplied fixed to an Ancon coupler.

Two types of coupler are available:

1. Ancon Tapered Thread Coupler - to accept a tapered thread continuation bar

Straight Bar - Shape Code 00

Bar Dia. (mm)Stocked Length (mm)Coupler Length (mm)Coupler External Dia. (mm)
12 660 58 22
16 870 70 25
20 1075 74 30
25 1340 90 36
32 1740 112 46

Details for specifying and ordering:
TTSB/Bar Dia./F/Length e.g. TTSB/16/F/1200

2. Ancon Parallel Thread Adaptor - to accept a standard metric bolt or studding

Straight Bar - Shape Code 00

Bar Dia. (mm)Thread Dia. (mm)Stocked Length (mm)Adaptor Length (mm)Adaptor External Dia. (mm)
12 M16 x 2.0mm pitch 655 56 25
16 M20 x 2.5mm pitch 870 68 28
20 M24 x 3.0mm pitch 1080 78 36
25 M30 x 3.5mm pitch 1345 95 42
32 M36 x 4.0mm pitch 1715 115 55

Details for specifying and ordering:

PTSB/Bar Dia./F/Length e.g. PTSB/16/F/1200

In addition to the straight bar shape code 00, other shape codes are available. Please download the Starter Bar brochure for details.

Each coupler features a plastic end cap to help prevent the ingress of concrete during casting.

Nailing Plate

A nail plate can be fixed to the end of an Ancon Tapered Thread coupler and is held in place by the plastic end cap supplied. This plate simplifies connection of the Starter Bar to the formwork.

Continuation Bar

The continuation bar, or male section, comprises a straight bar threaded at one end to allow connection to an Ancon tapered thread coupler. Bar lengths to BS 8110 of 50 x bar diameter are held in stock for each bar size. Other lengths are available to order. Bars are grade 500.

Torque Wrench

In order to ensure correct assembly, continuation bars should be tightened using a calibrated torque wrench. Torque wrenches purchased from us are supplied with a certificate of calibration.

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