Square Drive Countersunk Wood Screws

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    Square Drive Countersunk Wood Screws

    Robertson Countersunk Square Drive Screws

    Steel screws with zinc-plated treatment makes them suitable for sheltered exterior and all interior applications. This is the most common screw style; it is used for general work and has the widest range of sizes. The countersunk head allows the screw to be sunk into the timber or fitting for a flat surface.

    Finish is clear (silver) zinc plating; ideal for matching hardware hinges gate fittings etc. It is moderately corrosion resistant, but the finish is primarily decorative so should only be used in sheltered exterior applications if necessary. This finish is denoted by the -Z shown at the end of the product code.


    • Suitable for sheltered exterior and all interior applications
    • Ideal for matching hardware hinges gate fittings etc
    • Dry wax is applied to prevent corrosion and ease driving
    • To be sunk into the timber or fitting for a flat surface
    • The screws are extremely strong

    Countersunk Wooden Screws with corrosion protection!

    Where zinc is not available, the standard steel "Lube" finish is offered, which has a bronze/Grey colour. The colour of the screw comes from the heat treatment after which a dry wax is applied to prevent corrosion and ease driving. If there is no suffix shown on the product code, this is the finish the screws will be supplied in.

    If you require the lube finish in the popular 8G x 25 - 75mm screw sizes, we recommend purchasing the Particleboard Screws which are identical in colour and design but also include the four lugs for gripping the surface in man-made board which will not affect their ability in normal timbers.

    Origin of the Robertson square drive screws

    The "Robertson" screws were invented in Canada by Peter Robertson in 1908. Due to patent restrictions they stayed in Canada for many years and became the standard screw in that country. They are now spreading rapidly through the US and other countries. It is a far superior system and we are sure you will agree “once you use them you don't want to use anything else”. 

    Not only is the drive system better than the conventional drives, the actual quality of the screws is superb. The screws are extremely strong and the square drive means the driver doesn't jump out and the screw does not break under heavy load. 

    4Gx10mm Pk 100 Use #0 Driver
    $3.20 Clearance! (inc GST)
    RRP: $4.90
    4Gx15mm Pk 100 Use #0 Driver
    $3.60 Clearance! (inc GST)
    RRP: $5.50
    6Gx10mm Pk 100 Use #1 Driver
    $3.60 Clearance! (inc GST)
    RRP: $5.50
    6Gx12mm Pk 100 Use #1 Driver
    $3.60 Clearance! (inc GST)
    RRP: $5.50
    6Gx15mm Pk 100 Use #1 Driver
    $3.80 Clearance! (inc GST)
    RRP: $5.90
    6Gx19mm Pk 100 Use #1 Driver
    $3.40 Clearance! (inc GST)
    RRP: $5.25
    6Gx25mm Pk 100 Use #1 Driver
    $4.50 Clearance! (inc GST)
    RRP: $6.90
    6Gx31mm Pk 100 Use #1 Driver
    $4.90 Clearance! (inc GST)
    RRP: $7.50
    6Gx37mm Pk 100 Use #1 Driver
    $5.50 Clearance! (inc GST)
    RRP: $8.50
    6Gx44mm Pk 100 Use #1 Driver
    $4.90 Clearance! (inc GST)
    RRP: $7.50
    8Gx15mm Pk 100 Use #2 Driver
    $3.80 Clearance! (inc GST)
    RRP: $5.90
    8Gx19mm Pk 100 Use #2 Driver
    $4.20 Clearance! (inc GST)
    RRP: $6.50
    8Gx25mm Pk 100 Use #2 Driver
    $4.90 Clearance! (inc GST)
    RRP: $7.50
    8Gx28mm Pk 100 Use #2 Driver
    $4.40 Clearance! (inc GST)
    RRP: $6.70
    8Gx31mm Pk 100 Use #2 Driver
    $5.10 Clearance! (inc GST)
    RRP: $7.90
    8Gx37mm Pk 100 Use #2 Driver
    $5.90 Clearance! (inc GST)
    RRP: $9.00
    8Gx44mm Pk 100 Use #2 Driver
    $6.80 Clearance! (inc GST)
    RRP: $10.50
    8Gx50mm Pk 100 Use #2 Driver
    $6.80 Clearance! (inc GST)
    RRP: $10.50
    8Gx56mm Pk 50 Use #2 Driver
    $3.60 Clearance! (inc GST)
    RRP: $5.50
    8Gx62mm Pk 50 Use #2 Driver
    $4.50 Clearance! (inc GST)
    RRP: $6.90
    8Gx75mm Pk 50 Use #2 Driver
    $5.80 Clearance! (inc GST)
    RRP: $8.90
    8Gx99mm Pk 50 Use #2 Driver
    $10.40 Clearance! (inc GST)
    RRP: $16.00
    10Gx19mm Pk 100 Use #2 Driver
    $5.50 Clearance! (inc GST)
    RRP: $8.50
    10Gx25mm Pk 100 Use #2 Driver
    $6.20 Clearance! (inc GST)
    RRP: $9.50
    10Gx31mm Pk 100 Use #2 Driver
    $6.40 Clearance! (inc GST)
    RRP: $9.90
    10Gx37mm Pk 100 Use #2 Driver
    $6.80 Clearance! (inc GST)
    RRP: $10.50
    10Gx50mm Pk 100 Use #2 Driver
    $8.50 Clearance! (inc GST)
    RRP: $13.00
    10Gx56mm Pk 50 Use #2 Driver
    $4.50 Clearance! (inc GST)
    RRP: $6.90
    10Gx62mm Pk 50 Use #2 Driver
    $4.90 Clearance! (inc GST)
    RRP: $7.50
    10Gx75mm Pk 50 Use #2 Driver
    $6.40 Clearance! (inc GST)
    RRP: $9.90
    Out of Stock
    10Gx88mm Pk 50 Use #2 Driver
    $7.50 Clearance! (inc GST)
    RRP: $11.50
    12Gx88mm Pk 50 Use #2 Driver
    $9.70 Clearance! (inc GST)
    RRP: $14.90
    10Gx99mm Pk 50 Use #2 Driver
    $10.10 Clearance! (inc GST)
    RRP: $15.50
    12Gx37mm Pk 100 Use #3 Driver
    $11.40 Clearance! (inc GST)
    RRP: $17.50

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