Forgefix - Carriage Bolt & Nut ZP M12 x 100mm Bag 5

<p>These Forgefix Carriage Bolts are Zinc Plated, and ideal for timber to timber joining. They come complete with a hex nut and are fully threaded to 100mm. Also known as 'Cup Square Hex Bolts', the square underneath the Cup stops rotation of the bolt when tightening.</p> <p>Conform to DIN 603 and DIN 934 standards.</p> <p>Available in a comprehensive range of sizes to suit most applications.</p> <p>APPLICATION<br>Used mainly for fastening timber to timber and is extensively used for timber joist construction in house building and numerous decking applications.</p> <p>A Carriage Bolt, also known as a Coach Bolt or as a ‘Fully Threaded Cup Square Hex Bolt’, has a domed or countersunk head, and the shank is topped by a short square section under the head. The square section grips into the part being fixed (typically wood), preventing the bolt from turning when the nut is tightened. A rib neck Carriage Bolt has several longitudinal ribs instead of the square section, to grip into a metal part being fixed.</p> <p>Zinc coatings prevent oxidation of the protected metal to create a longer lasting finish. It does this by forming a barrier and by acting as a sacrificial anode if this barrier is damaged. Zinc oxide is a fine white dust that (in contrast to iron oxide) does not trigger a breakdown of the substrate’s surface integrity as it is formed. The zinc oxide, if left intact, can act as a barrier to further oxidation, in a way similar to the protection afforded to aluminium and stainless steels by their oxide layers.</p><p>Carriage Bolt &amp; Nut ZP M12 x 100 Bag 5</p>