Hillman Tap N' Seal self-piercing screw for fastening metal roofing and metal siding to wood framing in pole barns and similar metal-building applications. The needle point pierces metal and wood in one shot - no pilot hole needed - and the steel-backed flexible neoprene washer compresses to seal the fastened joint against wind-driven rain and snow melt.

• Size: #10 x 3" self-piercing pole barn / sheeter screw
• Head: Hex washer head with bonded steel-backed flexible neoprene washer
• Point: Needle point - cuts quickly through metal and wood with no pilot hole
• Thread: Coarse self-tapping thread for extra holding power in wood framing
• Finish: Gray ceramic-coated zinc plating - exceeds 1000-hour salt spray testing
• Fastens metal panels to wood and fiberglass panels to wood
• Pack: Contractor keg - 800 screws per keg

Tip: #10 x 3" is the deep-reach option - through thicker rigid-foam or fiberboard insulation panels into wood framing, or panel-plus-double-substrate stack-ups where the fastener must clear roughly 2 inches of insulation and sheathing before engaging the structural framing. Drive heads flush so the neoprene washer compresses evenly against the panel - over-drive and the washer extrudes out (no seal); under-drive and the washer doesn't load (still no seal). For maximum corrosion service, match the Hillman gray-ceramic Tap N' Seal screw with painted or galvalume-finished panels rather than bare galvanized - the gray ceramic finish is engineered to color-match common roofing finishes from a distance.