PB round head flat tail self-tapping screws M4*5 - M4*20

Self-tapping screw: Suitable for plastic materials, etc.
M4*5[100pcs], 4*6[100pcs], 4*8[100pcs], 4*10[100pcs], 4*12[100pcs], 4*14[100pcs], 4*16[100pcs], 4*18[100pcs], 4*20[100pcs]