#10/16 x 1-1/4" screws used to fasten 6-10mm multi-wall polycarbonate sheets to metal base. 100 screws with neoprene sealing washers per bag.
LTL Freight Type
Available for Drop Shipment
Definitely for metal.
I am installing the thin wall poly-carbonate on a wood framed carriage house as ambient lighting above the plywood siding. It was tedious to get some of them started on the Doug fir framing. I could not get a couple to get through where there was a knot.
These screws worked really well for attaching my polycarbonate sheets. I like the nice big washers