Flat Head w/ Wings Self-Drilling Screws - Type 410 SS

Type 410 stainless steel flat head style screw with drill point and shank slot enhances thread formation and removes exhaust in heavier steel. These self-drilling are designed to tap into heavier gauge metal up to .250" thick. The deep No. 3 square recess virtually eliminates cam-out. The Type 410 stainless steel with protective coating provides maiximum corrosion resistance.

Features:

• Type 410 stainless steel with protective coating for maximum corrosion resistance
• No. 3 square-drive, flat countersunk head with self-countersinking nibs
• No. 3 & 4 drilling point taps machine screw threads, full length threads into metal
• Wings above the drill point to provide clearance hole in work piece so it won't climb up the shank and break off as point engages the steel substrate
• Shank slot enhances thread formation in steel and removes partical exhaust
• 2-1/2" length for 2x4 wood header; 2" length for 1" and 5/4" boards
• Drilling thickness capacities: up to .209" (171 mils, 7 ga) for #1, up to .250" (229 mils, 3 ga) for #14

Applications: Fasten wood, plywood and fiber cement to heavier steel - up to .250" thick