BZP Cup Square Carriage Bolt (Washer & One, Nut per bolt you buy)
Two BZP washers + One BZP Full Nut for each A2 Stainless Steel Cup Square bolt you buy.
Fully Threaded to 150mm
A Carriage Bolt or Coach Bolt is mostly used in wood, with a domed top and a square under the head, designed to pull into the wood as the nut is tightened. A Carriage Bolt can also be used in drilled concrete fences and gate posts to fasten wooden posts and panels.