Raised countersunk tapping screw, C shape with Z recessed head DIN 7983, A2 stainless steel, plain, shape C, with Z cross recess.
DIN 7983 plain A2 stainless steel Z shape C point.
SCR-RSDCS-DIN7983-C-Z1-A2-2,9X16
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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.
Datasheets(X)
CAD data (available after login)
 | |
Standards | DIN 7983 |
Material | Stainless steel A2 |
Surface | Plain |
Form | C |
Head type | Raised countersunk head |
Drive type | Z |
Internal drive | Z1 |
Nominal diameter (d1) | 2.9 mm |
Head diameter (dk) | 5.5 mm |
Length (l1) | 16 mm |
Head height (k1) | 1.7 mm |
Head details | 0 - not applicable |
Thread type | Self-tapping screw thread |
Thread design | Full thread |
Thread form | 0 - not applicable |
RoHS-compliant | Yes |
Declaration of performance (EU-CPR) | No |
| Thread size | St 2.2 | St 2.9 | St 3.5 | St 3.9 | St 4.2 | St 4.8 | St 5.5 | St 6.3 | St 8 | St 9.5 |
| Min. sheet thickness (mm) | 0,8 | 1,1 | 1,3 | 1,3 | 1,4 | 1,6 | 1,8 | 1,8 | 2,1 | 2,1 |
| Max. sheet thickness (mm) | 1,8 | 2,2 | 2,8 | 3 | 3,5 | 4 | 4,5 | 5 | 6,5 | 7,5 |
| Pre-drilling diameter (mm) | 1,2 | 2,1 | 2,6 | 2,8 | 3,0 | 3,5 | 4,1 | 4,7 | 6,1 | 7,7 |
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