12mm x 340mm Coach Screw (DIN 571) | 4.8 Steel BZP

Product code: HHCS571-12-340-48-BZP
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12mm x 340mm Coach Screw (DIN 571) | 4.8 Steel BZP
12mm x 340mm Coach Screw (DIN 571) | 4.8 Steel BZP
12mm x 340mm Coach Screw (DIN 571) | 4.8 Steel BZP
12mm x 340mm Coach Screw (DIN 571) | 4.8 Steel BZP
12mm x 340mm Coach Screw (DIN 571) | 4.8 Steel BZP
12mm x 340mm Coach Screw (DIN 571) | 4.8 Steel BZP
Quantity
Unit Price
(ex. VAT)
Unit Price
(inc. VAT)
1 - 49 £3.76 £4.51
50 - 99 £3.38 £4.06
100 - 499 £3.04 £3.65
500 - 999 £2.43 £2.92
1000 + £1.88 £2.25
£4.51 / each
Quantity:


Product Specification
Size 12mm
Length 340mm
Head Height 8mm
Thread Length 204mm
Material 4.8 Steel BZP
Across Flats 19mm
Shank Diameter 12mm
Standard DIN 571

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M12 x 340mm Coach Screw DIN 571 | 4.8 Steel BZP

This M12 x 340mm coach screw is a DIN 571 hex head wood fastener manufactured from 4.8 Steel BZP, with a 204mm thread length and 19mm across flats for controlled spanner or socket installation. The 340mm length helps provide the reach required for timber bracket fixing without moving away from the DIN 571 coach screw pattern.

The bright zinc plated 4.8 steel construction gives practical surface protection for workshops, production areas and internal joinery where stainless steel is not required. It is useful for repairs and new builds where the installer needs a serviceable hex head fixing that can be tightened with common hand tools. The larger 12mm shank makes it suitable for heavier timber sections, support posts and bracket assemblies.

Common Applications

  • Decking subframes and outdoor timber supports
  • Gate hinges, straps and latch plates
  • Dry indoor timber fixing and general workshop construction
  • Timber-to-timber jointing in construction

M12 x 340mm Coach Screw Dimensions

  • Size: 12mm
  • Length: 340mm
  • Across Flats: 19mm
  • Head Height: 8mm
  • Thread Length: 204mm
  • Shank Diameter: 12mm
  • Material: 4.8 Steel BZP
  • Standard: DIN 571

Coach Screw Buying Guide

Match the across flats value to the correct spanner or socket before fitting. A controlled installation helps protect the head and gives a more secure fixing. Click here to read our coach screws guide.

View our full Coach Screws DIN 571 range or read our coach screws guide for extra advice on sizes, materials and installation.

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