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Double flat head ,With 6 ribs under head, Type 17.

Material Hardened Carbon Steel 10B21 & 1022A
Standard DIN, ASTM
Drive type Torx, Pozi
Core hardness 300-450HV
Surface hardness 550-700HV
Surface Treatment Yellow zinc
Certification ISO9001
Non-standards OEM based on the offered drawing or sample
Tail T-17
Parameters
Material
Hardened Carbon Steel 10B21 & 1022A
Standard
DIN, ASTM
Drive type
Torx, Pozi
Core hardness
300-450HV
Surface hardness
550-700HV
Surface Treatment
Yellow zinc
Certification
ISO9001
Non-standards
OEM based on the offered drawing or sample
Tail
T-17
I know
Detail

Chipboard screw used to fix wood, chipboard, fiberboard and other materials. Drilling point " Type 17 " and thread under angle that has 45 degrees provide a reliable and stable connection even in turning.