Bolt Size: M12 x 100mm
Pack Size: 5
Sale price£6.89 GBP


M12 x 100 Zinc Cup Square Carriage Bolt Including Bright Zinc Full Hex Nuts

M12 x 100

Massive discounts on this size due to excess stock

We wont be beaten on price!

Bright Zinc Cup Square Hexagon Bolts with Hex Nuts

Cup square carriage bolts meeting standard DIN 603 with hex nuts meeting standard DIN934 are mostly used in wood. The Cup Square Bolts also known as a coach bolt or carriage bolt have a domed top and a square under the head which pulls into the part being fixed, preventing the bolt from turning when the nut is tightened.

A carriage bolt is also commonly used in drilled concrete fences and gate posts to fasten wooden posts and panels

The majority of sizes fully threaded up to 150mm, any longer than this is typically part threaded for some more strength

NUTS ‘N’ BOLTS® Cup Square Carriage Bolts With Hex Nuts are CE APPROVED and meet DIN 603 Standards so quality is guaranteed

    M12 x 100 Cup Square Bolts
  • Bolts mostly used in wood
  • Bright Zinc Plated (BZP) and passivated
  • Bolts Conforms to DIN603 standard
  • Metric coarse thread
  • Standard 4.8 Grade
  • Exceptional High Quality

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Domed top and a square under the head. The square section grips into the part being fixed; preventing the bolt from turning when the nut is tightened.

Cup square bolts are also commonly referred to as carriage bolts or coach bolts due to their original usage in the manufacture of rolling stock. Cup square bolts consist of a domed circular head with a square neck portion and then a round shank.

The shank consists of both a plain load bearing portion as well as a threaded portion. Cup Square bolts are usually used in conjunction with a hexagon threaded nut (cup square hex) which fastens onto the thread of the Cup square bolt.

The bolt is locked into placed by the square neck as the nut is fastened onto the stationary bolt. Cup square bolts are widely used in construction, engineering, fencing and woodworking environments.

As with hexagon headed bolts, when measuring the length of a Cup square bolt it is important to measure from the underside of the head and not to include the bolt head to the end of threaded portion.

The diameter of the cup square bolt is measured from the actual diameter of the threaded portion and not the square neck.

Typically the square under the head is the same as diameter for example on a M8 carriage bolt the square will be 8 x 8 mm

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