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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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  • 1/4" UNF x 3/8" Socket Countersunk Machine Screw Self Colour ANSI B18.3

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    Price Each:
    £0.05 - £0.27
    £0.27 ex VAT
    £0.05 - £0.27
    £0.27 ex VAT
    £0.32  incl VAT
    Qty Discounts Available

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

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    Price Each:
    £0.06 - £0.28
    £0.28 ex VAT
    £0.06 - £0.28
    £0.28 ex VAT
    £0.34  incl VAT
    Qty Discounts Available

  • 1/4" UNF x 5/8" Socket Countersunk Machine Screw Self Colour ANSI B18.3

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    Price Each:
    £0.08 - £0.31
    £0.31 ex VAT
    £0.08 - £0.31
    £0.31 ex VAT
    £0.37  incl VAT
    Qty Discounts Available

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

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    Price Each:
    £0.10 - £0.34
    £0.34 ex VAT
    £0.10 - £0.34
    £0.34 ex VAT
    £0.41  incl VAT
    Qty Discounts Available

  • 1/4" UNF x 7/8" Socket Countersunk Machine Screw Self Colour ANSI B18.3

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    Price Each:
    £0.13 - £0.39
    £0.39 ex VAT
    £0.13 - £0.39
    £0.39 ex VAT
    £0.47  incl VAT
    Qty Discounts Available

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

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    Price Each:
    £0.09 - £0.25
    £0.25 ex VAT
    £0.09 - £0.25
    £0.25 ex VAT
    £0.30  incl VAT
    Qty Discounts Available

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

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    Price Each:
    £0.22 - £0.50
    £0.50 ex VAT
    £0.22 - £0.50
    £0.50 ex VAT
    £0.60  incl VAT
    Qty Discounts Available

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

    View
    Price Each:
    £0.13 - £0.39
    £0.39 ex VAT
    £0.13 - £0.39
    £0.39 ex VAT
    £0.47  incl VAT
    Qty Discounts Available

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

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    Price Each:
    £0.13 - £0.40
    £0.40 ex VAT
    £0.13 - £0.40
    £0.40 ex VAT
    £0.48  incl VAT
    Qty Discounts Available

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

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    Price Each:
    £0.20 - £0.50
    £0.50 ex VAT
    £0.20 - £0.50
    £0.50 ex VAT
    £0.60  incl VAT
    Qty Discounts Available

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

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    Price Each:
    £0.26 - £0.60
    £0.60 ex VAT
    £0.26 - £0.60
    £0.60 ex VAT
    £0.72  incl VAT
    Qty Discounts Available

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

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    Price Each:
    £0.36 - £0.75
    £0.75 ex VAT
    £0.36 - £0.75
    £0.75 ex VAT
    £0.90  incl VAT
    Qty Discounts Available