When do I use Twinstart screws?
We recommend these when using Plastic Expansion Plugs, Nylon Plugs & the Unifix Boardmaster as they expand the plug rather than cut into them. Its design is close to the original Twinstart woodscrew manufactured to BS1210:1963 & was until the mid 1990’s universally used in the Construction Industry & this is why they are imperially sized. It does of course also work well in wood.
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