Chipboa 4 x 20mm, CSK Pozi, A2 Stainless Steel, supplied in a pack of 500.
Tek screws are self-drilling screws with a hardened drill point that cuts through steel and taps its own thread in one operation. Used for fixing roof and wall cladding, purlins, box section and light steel framing.
The hex washer head drives with a socket or hex bit and seals with the bonded washer where fitted.
