Raised countersunk head tapping screw, C shape H recessed head DIN 7983, black zinc-nickel plated steel (ZNBHL) with H cross recess.
DIN 7983, steel, zinc-nickel black, H shape C
SCR-RSDCS-DIN7983-C-H2-(ZNBHL)-3,9X16
Art.-no. 425663916
EAN 4056807858340
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Self-tapping screws are screws that form their own thread. These screws form their own counter thread when screwed into a prefabricated core hole.
Reference values for selecting the correct core-hole diameter are included in DIN 7975.
Shape C = thread with tip
Shape F = thread without tip
Shape R = thread with a rounded tip
Datasheets(X)
|  | |
| Standards | DIN 7983 | 
| Material | Steel | 
| Surface | Zinc nickel black | 
| Form | C | 
| Head type | Raised countersunk head | 
| Drive type | H | 
| Internal drive | H2 | 
| Nominal diameter (d1) | 3.9 mm | 
| Head diameter (dk) | 7.5 mm | 
| Length (l1) | 16 mm | 
| Head height (k1) | 2.3 mm | 
| Thread type | Self-tapping screw thread | 
| Product class | A | 
| RoHS-compliant | Yes | 
| 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 | 
 
 
 
