The Cup Square Carriage Bolt and Hex Nut 40 x 6:mm (L x Dia) with zinc plated finish is a domed head bolt used for timber joist construction in buildings and numerous decking applications. The bolt comes with a domed head which helps in installation. It has a round head and square anti-spin shoulder that grips into the fixed part. The zinc oxide acts as a barrier to further oxidation which prevents rusting of the nut. The bolt and nut allows to be fastened with an unthreatened shank. The product

Brand Name	Unifix