Timco 5.5 x 19 Sheet Metal & Framing Screws – PH Drive, Silver Finish Box of 500

The coarse 60° self-tapping thread ensures superior grip, fast penetration, and excellent pull-out resistance in thin materials. 𝗥𝗘𝗟𝗜𝗔𝗕𝗟𝗘 𝗗𝗥𝗜𝗩𝗘 & 𝗖𝗟𝗘𝗔𝗡 𝗙𝗟𝗨𝗦𝗛 𝗙𝗜𝗡𝗜𝗦𝗛: Designed with a large flat head for increased clamping and a clean, flush finish on sheet materials.

eBay