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Reliable SD500® Self Drilling Screws for Metal

Self-drilling SD500® 12g-24 screws with an extended drill point for metal. Ideal for thick steel section, purlins and hot rolled steel commonly used by steel fabricators, builders, plumbers and HAVAC industries.

SD500® screws are a great option over other standard tek screws with there increased capacity to drill steel 3.0mm up-to 12.0mm. Designed to fix metal to metal, this can be achieved in a single piece of 12.0mm steel or by multiple pieces or by two pieces of steel with an air gap.

The hardened drill tip provides consistent and reliable drilling without the need of pilot holes. With consistent firm pressure the extended drill tip centers and drills steel pulling the screw into the fixture as threads hold on ensuring maximum pull-out strength.

When fixing timber to thick steel the SD500® countersunk range is a great option providing all the same performance with a flush finish.

Our range covers common head types in ruspert class 3 coating great for most applications. For when high-corrosive environments are specified our SD500® bimetal range provides properties of 300 grade stainless steel with the same drilling capacity.

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But what sets this apart from other self-drillers? 

  • Dual-hardened carbon steel for superior strength
  • Drill thick steel with a single screw
  • A choice of head types to suit any situation – hex headcountersunk, and wafer head – and for all common driver bits
  • Option of hex head bi-metal stainless screws for superior corrosion resistance

Ask us about our SD500® Screws & other types of self-drilling screws.

Questions? At Allfasteners, we don’t just sell fasteners. We pride ourselves in being experienced in many different trades, so our advice on which screw to use is backed by practical onsite experience. Feel free to get in touch if you have any doubts.