Customized Stainless Steel Self Tapping Screws Pan Head DIN 7981 ISO 7049

ISO7049 DIN7981 pan head Self tapping screws

This International Standard specifies the characteristics of Cross recessed pan head tapping screws with thread sizes from ST 2,2 to ST 9,5 inclusive.

Surface hardness:

The minimum surface hardness after heat treatment shall be 450 HV 0,3

Core hardness:

270 HV 5 to 390 HV 5 for threads S ST3,9, and
270 HV 10 to 390 HV 10 for threads > ST4,2.

If you are looking for flange head screws, please contact us for further information.

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