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Countersunk tapping screw, shape C with slot DIN 7972, A2 stainless steel
Countersunk tapping screw, shape C with slot DIN 7972, A2 stainless steel - 1
Countersunk tapping screw, shape C with slot DIN 7972, A2 stainless steel - 2

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Countersunk tapping screw, shape C with slot DIN 7972, A2 stainless steel

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Tapping screws belong to the thread-moulding screw family. When screwed into a pre-prepared core hole, these screws shape their own counter-thread.



Guideline values for selecting the correct core hole diameter are contained in DIN 7975.
  • Shape C = thread with tip

  • Shape F = thread without tip

  • Shape R = thread with rounded tip
Notice

Stainless steel tapping screws are weaker than case-hardening steel tapping screws. This means that these screws cannot form a counter thread in sheet steel. For this reason, they are used in soft materials such as aluminium only.