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Timber	decking	screw. Hobson	Engineering	have developed	a	superior	timber decking screw. The	 TDX® screw is	 a	 new	design	that enables	a combination	of the	features	that	the	market requires	in	a	screw.
These	features	include; 304/A2	stainless	steel	for corrosion resistance;	a	special	point, cut	and	thread	so	that	pre drilling	is	not required	into	most	hardwood to	save	time	and	money;	a trim	head for	a	neat	finish;	a	No.1 square	drive	so	the	bit	will not	slip	and	a	new type	of	square	thread	for greater	holding	power	which prevents	the deck	from	lifting.