Coach Screws

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coach screws in various finishes types and sizes

coach screws in stainless steel galvanised and zinc plate

Scrooz Hex Head Coach Screws Range Overview

Coach screw fasteners are a heavy duty bolt type screw with a hexagonal head, they are primarily used for heavy duty fixing of timber and general building materials, they can be also be used in conjunction with a plastic or nylon wallplug as a heavy duty concrete fastener. Available in various materials and finishes and screw diameter ranges of 6mm up to 12mm and in lengths up to 200mm.

They are manufactured from 4.6 grade carbon steel in zinc plated and hot dipped galvanised finishes or 316 marine grade stainless steel for ultimate corrosion protection, especially in treated timbers, also highly recommended for submerged applications e.g. boat repair.

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They are a very useful multi purpose fix-all fastener and are suitable for use in all general construction and engineering applications offering a flexible solution for heavy duty fixing of general wood constructions, framing timber and man made sheet materials such as plywood and MDF along with masonry and soft substrate fixing such as hollow brick and Hebel when used with a suitable nylon wallplug. Other typical applications include fastening of structural steel brackets and components to timber and stitching timber joists and landscape sleepers together.

These heavy duty screw fasteners are also known as lag screws or lag bolts but should not be confused with coach bolts or carriage bolts which are a bolting product with a nut.

 

Coach Screws General Features

  • Manufactured and compliant to Australian Standards AS1393 and DIN571
  • Hex head type for high torque applications allowing tightening with sockets, wrenches and spanners.
  • Tapered gimlet point for easy thread centering in predrilled holes.
  • General purpose heavy duty fastener with many benefits in construction and engineering applications.
  • Available in mutiple finishes, large diameters and long lengths for a flexible fixing solution.

 

Our Coach Screw Range

 

Zinc Plated Coach Screw Range

Coach Screws Zinc Plated

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Hexagon head 4.6 grade coach screws for heavy duty general purpose construction fastening of timber to timber and timber to steel. Can be used as medium duty expanding masonry fixings when used with nylon wallplugs.

Bright zinc plated for corrosion protection and suitable for internal use in untreated timber. For wood to wood connections we recommend using a washer under the head to prevent pull-through of the head and crushing of the timber.

  • Manufactured and compliant to Australian Standards AS1393.
  • Bolt head for high torque applications allowing tightening with sockets, wrenches and spanners.
  • Tapered gimlet point for easy thread centering in predrilled holes.
  • Sold in convenient grab packs or great value heavily discounted trade boxes.
Galvanised Coach Screw Range

Coach Screws Hot Dipped Galvanised

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Hexagon head 4.6 grade coach screws for heavy duty general purpose construction fastening of timber to timber and timber to steel. Can be used as medium duty expanding masonry fixings when used with nylon wallplugs.

Hot dipped galvanised for premium corrosion protection and suitable for external use in treated timber. For wood to wood connections we recommend using a washer under the head to prevent pull-through of the head and crushing of the timber.

  • Manufactured and compliant to Australian Standards AS1393.
  • Bolt head for high torque applications allowing tightening with sockets, wrenches and spanners.
  • Tapered gimlet point for easy thread centering in predrilled holes.
  • Sold in convenient grab packs or great value heavily discounted trade boxes.
Stainless Steel Coach Screw Range

Coach Screws Stainless Steel

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Hexagon head 316 marine grade stainless steel coach screw range for heavy duty general purpose construction fastening of timber to timber and steel to timber where maximum corrosion resistance and long life is required. Can be used as medium duty expanding masonry fixings when used with nylon wallplugs.

316 grade stainless steel is a much higher performance corrosion resistant alloy than the typical grade 304 and is essential if you are using these fasteners in very high corrosive areas such as around salt water or chlorinated pools or near coastal areas or if you want the best 'fit & forget' fasteners available for your project with a min 20+ year lifespan.

For wood to wood connections we recommend using a washer under the head to prevent pull-through of the head and crushing of the timber.

  • Manufactured and compliant to Euro Standards DIN 571.
  • Premium 316 marine grade stainless steel for maximum corrosion protection.
  • Bolt head for high torque applications allowing tightening with sockets, wrenches and spanners.
  • Tapered gimlet point for easy thread centering in predrilled holes.
  • Sold in convenient grab packs or heavily discounted trade boxes.

 

Get The Tech

Download Our Tech Docs Here

Coach Screws AS1393:1996 Australian Standard Full Document Download

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This is the full copy of AS/NZS 1393:1996 Coach Screws - Metric Series with ISO Hexagon Heads from Standards Australia, it specifies the dimensions and marking requirements for coach screws for use in timber structures in ISO preferred series diameters from 6mm to 20mm inclusive and lengths up to 200mm, and with ISO hexagon heads and either full body or reduced diameter (scant) shanks, and the material requirements for steel coach screws.

AS/NZS 1393:1996 Australian Standard refers to Zinc Plated and Hot Dipped Galvanised Coach Screws.

Other Standards Referenced in AS 1393 include :

  • AS 4291.1-2000 Mechanical Properties of Fasteners Made of Carbon Steel and Alloy Steel - Bolts, Screws and Studs.
  • AS 1650-1989 Hot Dipped Galvanizing Coatings on Ferrous Articles.
  • AS/NZS 429.1:1995 Mechanical Properties of Fasteners, Bolts, Screws and Studs.
  • NZS 3604:2011 Timber Framed Buildings
  • AS 5100.9:2017 Bridge Design Timber.
  • NZS 3604:2011 Timber Framed Buildings

 

Coach Screws AS1393:1996 Australian Standard Snapshot Document Download

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This is a snapshot of Coach Screw sizes and tolerances detailed in the Australian Standard AS/NZS 1393:1996 Coach Screws - Metric Series with ISO Hexagon Heads from Standards Australia, it specifies the dimensions and marking requirements for coach screws for use in timber structures in ISO preferred series diameters from 6mm to 20mm inclusive and lengths up to 200mm, and with ISO hexagon heads and either full body or reduced diameter (scant) shanks, and the material requirements for steel coach screws.

AS/NZS 1393:1996 Australian Standard refers to Zinc Plated and Hot Dipped Galvanised Coach Screws.

 

Stainless Steel Coach Screw DIN571 Standard Snapshot Document Download

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This is a snapshot of Coach Screw sizes and tolerances detailed in the European Standard DIN 571:2010-11 Hexagon Head Wood Screws from the German Instiutute for Standardisation (Deutsches Institut Fur Normung), it specifies the dimensions and marking requirements for hexagon head screws for use in timber structures.

This Standard refers to Stainless Steel Coach Screws and is used in Australia as the Industry Standard as there is no current Australian Standard for Stainless Hex Head Wood Screws.


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