Vijay Agency

HP Self Drilling Tapping Screws Xylan Coated, AS 3566 Class-3 Landmark Fasteners Pvt. Ltd. has been marketing Xylan a Class 3, coating which is an unique anti-corrosive coating system consisting of 3 distinct layers which combine to exceptional proction:-

• A mechanically deposited Zinc alloy coating giving excellent galvanic protection.
• A chromate conversion coating to passivate the zinc alloy, further inhibiting coating loss.
• An aluminium filled polyster coating with good all-round corrosion & long -term weathering resistance.

'HP' Xylan coated self-drilling screw marketed in India by Landmark Fasteners (P) Ltd. are easily recognized by their silver grey appearance with 'HP' mark on the head & with a high performance corrosion resistant coating & conforming to AS 3566 Class 3 having following:

• Better driving performance because of smoother, harder finish.
• Effective sealing of roofing sheets/cladding & reduced corrosion with an improved black non-conductive EPDM seal

The black seal remains elastic in temperature extremes & will not breakdown & allow water entry.

The AS 3566 is a Standard established by the Standards Associations of Australia to specify the requirements for a self-drilling screws to be suitable for use in steel and timber.
It clearly specifies certain criteria that a suitable fastener should meet. One of the most important criteria of this standard covers the corrosion resistant requirements fo a self-drilling screw.