Winged screw for fixing fibre boards

Winged plate screw for fixing wood to steel, self-tapping.

d4.24.85.56.3
dk8.19.510.812.4
k ~2.533.43.8
m4.75.16.87.1
p max9.211.212.213.2
Bit No.2233
Max. steel thickness34.45.256