Countersunk tapping screw, shape C with slot DIN 7972, A2 stainless steel
DIN 7972 stainless steel A2 ctrsnk head shape C
SCR-CS-DIN7972-C-A2-3,9X9,5
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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
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.
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