12mm x 240mm Coach Screws (DIN 571) - Black Marine Stainless Steel (A4) Description
The 12mm x 240mm Coach Screws (DIN 571) - Black Marine Stainless Steel (A4) has the following features:
- 8.45mm Head Length (H)
- DIN 571 Manufacturing Standard
- 240mm Length (L)
- Marine Stainless Steel (A4) Material
- Marine Stainless Steel (A4) Material Specification
- 11.30mm Shank Dia. (d)
- Matte Black Finish
- Metric Metric or Imperial?
- 12mm Thread Size
- 19mm Socket Size (J)
- 144mm Thread Length (Min) (E)
Discover more about the Metric Coach Screws range.
Coach screws, also commonly known as lag bolts and lag screws, are robust fasteners designed for heavy-duty applications. These screws are distinguished by their sharp point, tapered shank, and hexagonal head, allowing them to be driven with a wrench or a socket. Their self-tapping threaded design allows for a strong grip and ease of application in various materials including timber and composites. Their structural integrity makes them ideal for heavy-duty applications, particularly in construction and carpentry.
How Coach Screws Work
Renowned for their strength and versatility, coach screws for wood are an essential component in numerous industries, from timber frame construction to furniture making. They are particularly effective in securing heavy wooden beams, attaching metal frames to wood, and in load-bearing applications. For instance, our 150mm coach screws are a popular choice in the construction of wooden decks, where their length and sturdiness ensure a lasting hold.
Material and Benefits
At Accu, we offer A2 and A4 Stainless Steel coach screws, promoting durability and resistance against corrosion. This makes them ideal for outdoor applications, such as in garden structures or external timber framing. A4 stainless coach screws in particular, due to their marine grade chromium composition, offer superior resistance against the elements.
Coach Screw Sizes, Types, and Special Finishes
Our range of coach screw sizes spans from a smaller 4mm thread size to a resolute 16mm, and their lengths stretch from 20mm to 300mm, ensuring suitability for various thicknesses and densities of materials.
For those seeking a unique or specific aesthetic, our AccuBlack black coach screws offer a sleek and contemporary option which not only allows them to seamlessly blend in with darker projects but offers even greater corrosion resistance.
The variety doesn't stop there; we also provide custom manufacturing services to meet unique project specifications if our shoppable variants don't quite meet your project requirements.
Similar products within the same family include hex bolts which can be explored for alternate applications if you're primarily using tapped holes in a workpiece and require machine threads rather than self-tapping ones.
FAQs
Q: How do you fasten coach screws?
A: Fastening typically involves pre-drilling a pilot hole smaller than the thread size, followed by driving the screw into place with a wrench or socket. The self-tapping threads form by themselves offering amazing grabbing power.
Q: Do coach screws go into concrete?
A: Yes, coach screws can be used in concrete, but it's important to use a suitable plug or anchor for secure fixing. For a fixing designed to go straight into concrete, our masonry anchor range might be just what you need.
Q: Do coach screws need rawl-plugs?
A: In most cases, especially in masonry or concrete, coach screws require rawl-plugs or similar anchors to ensure a secure hold. If you'd prefer a fastener specifically to be driven into these materials without the need for plugs, then our concrete screws are just the component.
Q: What is an alternative to coach screws?
A: Alternatives to these fasteners include self-tapping hexagon bolts, which offer similar strength and are suitable for heavy-duty applications.
Q: Can coach screws be used outside?
A: Absolutely, especially our stainless steel variants, which are corrosion-resistant and ideal for outdoor use.
