#9 x 1 1 2 in. External Hex Drive Washer Head Roofing Screws (400 Pack) Heavy Duty Hook Sturdy vinyl construction resists warping 100051140 Sturdy vinyl construction resists warping ) 19 Manufacturer Warranty Two year limited warranty 011 Finish ClimaCoat Measurement Standard SAE Size #9 Fastener Connector Material Steel Package Quantity 400 Fastener Type Sheet Metal Screw Head Style Washer Head Materials Fastened Metal to Wood Screw Length 1 1 2 in Thread Pitch 0 Manufacturer Warranty This product is sold "as is" without any express or implied warranties Ideal for metal to wood applications and provides exceptional corrosion resistance especially when fastening roofing panels to wood structures