CONCRETE SCREW, also called as window frame screw.

7.5mm diameterTorx recess T30, Flat head with 6 nibs under head, 3cutting on thread, partial HI-LO Thread

Material: 1022 steelBrand Name:HB

Length: from 42mm to 212mm.

Processing: case harden on the surface.

Finish: zinc plated yellow or white.

Head type:Torx-30 Countersunk

Packing: small box by 100 pcs then into cartons and pallet

Supply ability per month: 200 tons.