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UNF - countersunk machine screws with a hex socket recess in various diameters and lengths.

UNF - Self-Colour Countersunk Socket Screws - ANSI B18.3

UNF, socket countersunk machine screws with a hex drive socket recess. Available in various diameters and lengths at competitive prices. With an imperial unified fine thread (UNF) and a deep hexagonal socket allowing higher torque and higher clamping force. Best used with a pre-drilled hole where the countersunk head allows for a flush finish to the surface of the material.

Conforms to ANSI B18.3 with a range of bulk discounts available.

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  • 7/16" UNF x 1 1/2" Socket Countersunk Machine Screw Self Colour ANSI B18.3

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    Price Each:
    £0.70 - £1.30
    £1.30 ex VAT
    £0.70 - £1.30
    £1.30 ex VAT
    £1.56  incl VAT
    Qty Discounts Available

  • 7/16" UNF x 1 3/4" Socket Countersunk Machine Screw Self Colour ANSI B18.3

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    Price Each:
    £0.80 - £1.47
    £1.47 ex VAT
    £0.80 - £1.47
    £1.47 ex VAT
    £1.76  incl VAT
    Qty Discounts Available

  • 7/16" UNF x 2" Socket Countersunk Machine Screw Self Colour ANSI B18.3

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    Price Each:
    £0.20 - £0.20
    £0.20 ex VAT
    £0.20 - £0.20
    £0.20 ex VAT
    £0.24  incl VAT

  • 7/16" UNF x 2 1/2" Socket Countersunk Machine Screw Self Colour ANSI B18.3

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    Price Each:
    £1.10 - £1.95
    £1.95 ex VAT
    £1.10 - £1.95
    £1.95 ex VAT
    £2.34  incl VAT
    Qty Discounts Available

  • 1/2" UNF x 3/4" Socket Countersunk Machine Screw Self Colour ANSI B18.3

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    Price Each:
    £0.31 - £0.68
    £0.68 ex VAT
    £0.31 - £0.68
    £0.68 ex VAT
    £0.82  incl VAT
    Qty Discounts Available

  • 1/2" UNF x 1" Socket Countersunk Machine Screw Self Colour ANSI B18.3

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    Price Each:
    £0.36 - £0.77
    £0.77 ex VAT
    £0.36 - £0.77
    £0.77 ex VAT
    £0.92  incl VAT
    Qty Discounts Available

  • 1/2" UNF x 1 1/4" Socket Countersunk Machine Screw Self Colour ANSI B18.3

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    Price Each:
    £0.40 - £0.83
    £0.83 ex VAT
    £0.40 - £0.83
    £0.83 ex VAT
    £1.00  incl VAT
    Qty Discounts Available

  • 1/2" UNF x 1 1/2" Socket Countersunk Machine Screw Self Colour ANSI B18.3

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    Price Each:
    £0.45 - £0.90
    £0.90 ex VAT
    £0.45 - £0.90
    £0.90 ex VAT
    £1.08  incl VAT
    Qty Discounts Available

  • 1/2" UNF x 1 3/4" Socket Countersunk Machine Screw Self Colour ANSI B18.3

    View
    Price Each:
    £0.46 - £0.92
    £0.92 ex VAT
    £0.46 - £0.92
    £0.92 ex VAT
    £1.10  incl VAT
    Qty Discounts Available

  • 1/2" UNF x 2" Socket Countersunk Machine Screw Self Colour ANSI B18.3

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    Price Each:
    £0.53 - £1.03
    £1.03 ex VAT
    £0.53 - £1.03
    £1.03 ex VAT
    £1.24  incl VAT
    Qty Discounts Available

  • 1/2" UNF x 2 1/4" Socket Countersunk Machine Screw Self Colour ANSI B18.3

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    Price Each:
    £0.66 - £1.24
    £1.24 ex VAT
    £0.66 - £1.24
    £1.24 ex VAT
    £1.49  incl VAT
    Qty Discounts Available

  • 1/2" UNF x 2 1/2" Socket Countersunk Machine Screw Self Colour ANSI B18.3

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    Price Each:
    £0.88 - £1.59
    £1.59 ex VAT
    £0.88 - £1.59
    £1.59 ex VAT
    £1.91  incl VAT
    Qty Discounts Available

  • 1/2" UNF x 3" Socket Countersunk Machine Screw Self Colour ANSI B18.3

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    Price Each:
    £0.84 - £1.53
    £1.53 ex VAT
    £0.84 - £1.53
    £1.53 ex VAT
    £1.84  incl VAT
    Qty Discounts Available