Square Drive Screws

Square Drive Screws

1907 advert for Robertson square drive screws

Square drive screws were invented by Canadian Peter L. Robertson over 110 years ago in 1908.

There is no doubt that this type of screw is so user friendly that once used, you will probably never go back to a conventional type. The screw head has a deep square recess to take the driver. The screwdriver locks into the screw head so that you can wave it about and the screw will not fall off.

We keep scrulox screwdrivers to match the screws.

  • Square Drive Wood Screws #8 x 3/4" (Box of 200)

    Square Drive Wood Screws #8 x 3/4" (Box of 200)

    Box of 200 No.8 x 3/4 inch square-lok / square drive, countersunk head, wood screws.

    Twin thread, fully hardened steel. Bright zinc plated for longer life.

    Use on hardwood, softwood, chipboard and fibreboard.

    £7.34

    Square Drive Wood Screws #8 x 3/4" (Box of 200)

    Square Drive Wood Screws #8 x 3/4" (Box of 200)

    Box of 200 No.8 x 3/4 inch square-lok / square drive, countersunk head, wood screws.

    Twin thread, fully hardened steel. Bright zinc plated for longer life.

    Use on hardwood, softwood, chipboard and fibreboard.

    £7.34

  • Square Drive Wood Screws #8 x 1" (Box of 200)

    Square Drive Wood Screws #8 x 1" (Box of 200)

    Box of 200 No.8 x 1 inch square-lok / square drive, countersunk head, wood screws.

    Twin thread, fully hardened steel. Bright zinc plated for longer life.

    Use on hardwood, softwood, chipboard and fibreboard.

    £7.73

    Square Drive Wood Screws #8 x 1" (Box of 200)

    Square Drive Wood Screws #8 x 1" (Box of 200)

    Box of 200 No.8 x 1 inch square-lok / square drive, countersunk head, wood screws.

    Twin thread, fully hardened steel. Bright zinc plated for longer life.

    Use on hardwood, softwood, chipboard and fibreboard.

    £7.73

  • Square Drive Wood Screws #8 x 1-1/4" (Box of 200)

    Square Drive Wood Screws #8 x 1-1/4" (Box of 200)

    Box of 200 No.8 x 1-1/4 inch square-lok / square drive, countersunk head, wood screws.

    Twin thread, fully hardened steel. Bright zinc plated for longer life.

    Use on hardwood, softwood, chipboard and fibreboard.

    £7.10

    Square Drive Wood Screws #8 x 1-1/4" (Box of 200)

    Square Drive Wood Screws #8 x 1-1/4" (Box of 200)

    Box of 200 No.8 x 1-1/4 inch square-lok / square drive, countersunk head, wood screws.

    Twin thread, fully hardened steel. Bright zinc plated for longer life.

    Use on hardwood, softwood, chipboard and fibreboard.

    £7.10

  • Square Drive Wood Screws #8 x 1-1/2" (Box of 200)

    Square Drive Wood Screws #8 x 1-1/2" (Box of 200)

    Box of 200 No.8 x 1-1/2 inch square-lok / square drive, countersunk head, wood screws.

    Twin thread, fully hardened steel. Bright zinc plated for longer life.

    Use on hardwood, softwood, chipboard and fibreboard.

    £9.82

    Square Drive Wood Screws #8 x 1-1/2" (Box of 200)

    Square Drive Wood Screws #8 x 1-1/2" (Box of 200)

    Box of 200 No.8 x 1-1/2 inch square-lok / square drive, countersunk head, wood screws.

    Twin thread, fully hardened steel. Bright zinc plated for longer life.

    Use on hardwood, softwood, chipboard and fibreboard.

    £9.82

  • Square Drive Wood Screws #8 x 2" (Box of 200)

    Square Drive Wood Screws #8 x 2" (Box of 200)

    Box of 200 No.8 x 2 inch square-lok / square drive, countersunk head, wood screws.

    Twin thread, fully hardened steel. Bright zinc plated for longer life.

    Use on hardwood, softwood, chipboard and fibreboard.

    £12.04

    Square Drive Wood Screws #8 x 2" (Box of 200)

    Square Drive Wood Screws #8 x 2" (Box of 200)

    Box of 200 No.8 x 2 inch square-lok / square drive, countersunk head, wood screws.

    Twin thread, fully hardened steel. Bright zinc plated for longer life.

    Use on hardwood, softwood, chipboard and fibreboard.

    £12.04

  • Square Drive Wood Screws #10 x 1-1/2" (Box of 200)

    Square Drive Wood Screws #10 x 1-1/2" (Box of 200)

    Box of 200 No.10 x 1-1/2 inch square-lok / square drive, countersunk head, wood screws.

    Twin thread, fully hardened steel. Bright zinc plated for longer life.

    Use on hardwood, softwood, chipboard and fibreboard.

    £10.46

    Square Drive Wood Screws #10 x 1-1/2" (Box of 200)

    Square Drive Wood Screws #10 x 1-1/2" (Box of 200)

    Box of 200 No.10 x 1-1/2 inch square-lok / square drive, countersunk head, wood screws.

    Twin thread, fully hardened steel. Bright zinc plated for longer life.

    Use on hardwood, softwood, chipboard and fibreboard.

    £10.46

  • Robertson Screwdriver Green #1 Square Drive Head

    Robertson Screwdriver Green #1 Square Drive Head

    This green handle Robertson® size No.1 scrulox / screwlux / square drive screwdriver suits screw gauges 5, 6 and 7 (less common, smaller sizes).

    Robertson screwdrivers are easy to use one-handed, because the tapered square head tends to retain the screw, even if it is shaken.

    £6.56

    Robertson Screwdriver Green #1 Square Drive Head

    Robertson Screwdriver Green #1 Square Drive Head

    This green handle Robertson® size No.1 scrulox / screwlux / square drive screwdriver suits screw gauges 5, 6 and 7 (less common, smaller sizes).

    Robertson screwdrivers are easy to use one-handed, because the tapered square head tends to retain the screw, even if it is shaken.

    £6.56

  • Robertson Screwdriver Red #2 Square Drive Head

    Robertson Screwdriver Red #2 Square Drive Head

    This red handle Robertson® size No.2 scrulox / screwlux / square drive screwdriver suits screw gauges 8-10 (the most popular sizes).

    Robertson screwdrivers are easy to use one-handed, because the tapered square head tends to retain the screw, even if it is shaken.

    £7.02

    Robertson Screwdriver Red #2 Square Drive Head

    Robertson Screwdriver Red #2 Square Drive Head

    This red handle Robertson® size No.2 scrulox / screwlux / square drive screwdriver suits screw gauges 8-10 (the most popular sizes).

    Robertson screwdrivers are easy to use one-handed, because the tapered square head tends to retain the screw, even if it is shaken.

    £7.02

  • Robertson Screwdriver Black #3 Square Drive Head

    Robertson Screwdriver Black #3 Square Drive Head

    This black handle Robertson® size No.3 scrulox / screwlux / square drive screwdriver suits screw gauges 12 and 14 (larger type).

    Robertson screwdrivers are easy to use one-handed, because the tapered square head tends to retain the screw, even if it is shaken.

    £7.02

    Robertson Screwdriver Black #3 Square Drive Head

    Robertson Screwdriver Black #3 Square Drive Head

    This black handle Robertson® size No.3 scrulox / screwlux / square drive screwdriver suits screw gauges 12 and 14 (larger type).

    Robertson screwdrivers are easy to use one-handed, because the tapered square head tends to retain the screw, even if it is shaken.

    £7.02

  • Square Drive Screwdriver Hex Bit Size #2

    Square Drive Screwdriver Hex Bit Size #2

    Square drive screwdriver bit, suits Robertson / Scrulox / Screwlux / Square loc screws.

    Standard 1/4 inch hexagonal shank.

    Very popular with tradesmen, this size No.2 square head bit suits screw gauges 8 and 10 (the most popular sizes).

    £3.30

    Square Drive Screwdriver Hex Bit Size #2

    Square Drive Screwdriver Hex Bit Size #2

    Square drive screwdriver bit, suits Robertson / Scrulox / Screwlux / Square loc screws.

    Standard 1/4 inch hexagonal shank.

    Very popular with tradesmen, this size No.2 square head bit suits screw gauges 8 and 10 (the most popular sizes).

    £3.30

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