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Price
$144.99
Pack Of 10 M10 x 180mm Black Stainless Steel Cup Square Carriage Bolts, Coach Screws with Dome Mushroom Heads. Durable, Corrosion-Resistant Fasteners For Wood, Metal, And Masonry Applications โ€” image 1
Carriage BoltsNuts About Boltsโœ“ In stock

Pack Of 10 M10 x 180mm Black Stainless Steel Cup Square Carriage Bolts, Coach Screws with Dome Mushroom Heads. Durable, Corrosion-Resistant Fasteners For Wood, Metal, And Masonry Applications

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$144.99
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About this item
  • Made from black stainless steel for maximum strength and durability
  • Corrosion-resistant finish ensures long-lasting performance indoors and outdoors
  • Cup square design with mushroom dome head provides a secure and neat finish
  • Square neck prevents rotation during tightening for a firm and stable hold
  • Suitable for wood, metal, and masonry applications in construction, furniture, and DIY projects
Product description

Our M5, M6, M8, and M10 black stainless steel cup square carriage bolts, also known as coach screws, are designed to deliver strength, durability, and reliability across a wide range of applications. Each bolt features a dome-shaped mushroom head paired with a square neck beneath, which ensures a secure fit by preventing the bolt from turning when tightened. This makes them especially effective for creating strong and lasting joints where stability is essential. Manufactured from high-quality stainless steel and finished in a sleek black coating, these carriage bolts are not only robust but also highly resistant to corrosion, rust, and general wear. The combination of durability and weather resistance makes them suitable for both indoor and outdoor projects, whether exposed to the elements or installed in demanding environments. Their smooth mushroom-shaped heads provide a neat and professional finish, enhancing the overall appearance of the project while also reducing the risk of snagging. These fasteners are versatile and dependable, performing exceptionally well in wood, metal, and masonry, which makes them ideal for construction, furniture assembly, fencing, decking, and heavy-duty DIY work. Whether you are securing timber beams, fixing metalwork, or reinforcing masonry, these black stainless steel coach screws deliver a secure and long-lasting hold you can rely on. With sizes ranging from M5 through to M10, they offer flexibility to meet the requirements of different jobs while maintaining the same consistent quality.

Product details
Brand
Nuts About Bolts
Manufacturer
Nuts About Bolts
Colour
Black
Size
M10 x 180mm
Part number
BLKA2COAH56810

Customer reviews

What customers say about Bigamart

10 Trustpilot reviews total, with 2 shown at a time.

Trustpilot
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Excellent
4.5 average rating
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S
Sigalit
๐Ÿ‡ฎ๐Ÿ‡ฑ ยท January 2026
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I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.

V
Verified buyer
๐Ÿ‡ฆ๐Ÿ‡บ ยท November 2025
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The package was here in Australia from England in a few days โ€” so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.

Showing 1โ€“2 of 10 reviews

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Pack Of 10 M10 x 180mm Black Stainless Steel Cup Square Carriage Bolts, Coach Screws with Dome Mushroom Heads. Durable, Corrosion-Resistant Fasteners For Wood, Metal, And Masonry Applications | Bigamart