Self-Tapping, Self-Drilling & Thread-Forming Screws


Self-Tapping and Self-Drilling screws are fixings that tap their own holes in to various materials, primarily sheet metal, wood and plastic. Self-tapping and Self-drilling screws are available with a range of threads like Metric and UTS (Unified Thread Standard). They are also available in different materials and finish dependent on application and environment.

  • Self-Tapping Screws: Tap their own hole into the wood, metal or plastic. Although not essential, a pre-drilled pilot hole is helpful as it ensures that the screw enters the chosen material easily and positions the fixing correctly.
  • Self-Drilling Screws: Work in the same way as a self-tapping screw but has the bonus of drilling the pilot hole at the same time saving time and effort.

  • Self-tapping screws can also be split into further types:

  • Thread forming – displace material
  • Thread cutting – remove material


  • Applications:

  • DIY
  • Carpentry
  • Surgery

  • Something you might not know, is that many dental implants and orthopaedic bone screws are great examples of where self-tapping screws are used in surgery.
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    Description Price Length Imperial Length Metric Thread Size Metric Thread Size mm Thread Size UTS Head Shape Drive Type Finish Material Stainless Steel Type
    RS Stock No. 546-5884
    Mfr. Part No.DIN7504
    BrandRS Pro
    £8.57
    1 Box of 100
    1in 25mm M5.5 5.5mm - Hex Washer Hex Bright Zinc Plated Steel -
    RS Stock No. 483-1202
    BrandRS Pro
    £3.42
    1 Bag of 100
    - 5mm M3 - - Pan - Clear Passivated, Zinc Steel -
    RS Stock No. 546-5806
    Mfr. Part No.DIN7504
    BrandRS Pro
    £3.98
    1 Box of 100
    1/2in 13mm M4.2 4.2mm - Hex Washer Hex Bright Zinc Plated Steel -
    RS Stock No. 546-5913
    Mfr. Part No.DIN7504
    BrandRS Pro
    £11.15
    1 Box of 100
    1.1/2in 38mm M5.5 5.5mm - Hex Washer Hex Bright Zinc Plated Steel -
    RS Stock No. 522-1454
    Mfr. Part No.A4420308 0.75
    BrandRS Pro
    £7.73
    1 Box of 100
    3/8in 9.5mm - - No. 8 Pan Pozidriv Plain Stainless Steel A4, 316
    RS Stock No. 546-5834
    Mfr. Part No.DIN7504
    BrandRS Pro
    £4.63
    1 Box of 100
    5/8in 16mm M4.8 4.8mm - Hex Washer Hex Bright Zinc Plated Steel -
    RS Stock No. 546-5604
    Mfr. Part No.DIN7981
    BrandRS Pro
    £2.06
    1 Box of 100
    1/4in 6.5mm - - No. 4 Pan Pozidriv Bright Zinc Plated Steel -
    RS Stock No. 546-5862
    Mfr. Part No.DIN7504
    BrandRS Pro
    £6.66
    1 Box of 100
    1in 25mm M4.8 4.8mm - Hex Washer Hex Bright Zinc Plated Steel -
    RS Stock No. 483-1252
    BrandRS Pro
    £6.30
    1 Bag of 100
    - 12mm M5 - - Pan - Clear Passivated, Zinc Steel -
    RS Stock No. 521-535
    BrandRS Pro
    £3.53
    1 Bag of 100
    1/4in 6.5mm - - No. 4 Pan Pozidriv Plain Stainless Steel A2 304
    RS Stock No. 521-614
    BrandRS Pro
    £6.01
    1 Bag of 100
    1/2in 13mm - - No. 8 Pan Pozidriv Plain Stainless Steel A2 304
    RS Stock No. 482-8054
    BrandRS Pro
    £4.02
    1 Bag of 100
    - 6mm - - No. 4 Pan - Bright Zinc Plated Steel -
    RS Stock No. 546-5878
    Mfr. Part No.DIN7504
    BrandRS Pro
    £7.30
    1 Box of 100
    3/4in 19mm M5.5 5.5mm - Hex Washer Hex Bright Zinc Plated Steel -
    RS Stock No. 483-1218
    BrandRS Pro
    £3.81
    1 Bag of 100
    - 10mm M3 - - Pan - Clear Passivated, Zinc Steel -
    RS Stock No. 546-5979
    Mfr. Part No.DIN7504
    BrandRS Pro
    £6.44
    1 Bag of 100
    3/4in 19mm - - No. 8 Pan Pozidriv Bright Zinc Plated Steel -
    RS Stock No. 546-5957
    Mfr. Part No.DIN7504
    BrandRS Pro
    £6.20
    1 Bag of 100
    1/2in 13mm - - No. 8 Pan Pozidriv Bright Zinc Plated Steel -
    RS Stock No. 546-5812
    Mfr. Part No.DIN7504
    BrandRS Pro
    £4.63
    1 Box of 100
    3/4in 19mm M4.2 4.2mm - Hex Washer Hex Bright Zinc Plated Steel -
    RS Stock No. 546-5654
    Mfr. Part No.DIN7981
    BrandRS Pro
    £2.20
    1 Box of 100
    3/8in 9.5mm - - No. 6 Pan Pozidriv Bright Zinc Plated Steel -
    RS Stock No. 180-695
    BrandRS Pro
    £8.72
    1 Bag of 100
    1in 25mm - - No. 8 Countersunk Pozidriv Plain Stainless Steel A2 304
    RS Stock No. 546-5648
    Mfr. Part No.DIN7981
    BrandRS Pro
    £2.18
    1 Box of 100
    1/4in 6.5mm - - No. 6 Pan Pozidriv Bright Zinc Plated Steel -