8-18x12-32 Yellow Zinc Plated (BUTTON Z/Y) Phillips Button Head Self-drilling Screw

Product Overview
The button head yellow zinc carbon steel self-drilling screw is a fastener designed specifically for the highly efficient connection of metal sheets and light steel components, also commonly referred to in the industry as a wafer head self-drilling screw or a large flat head tek screw. Using high-strength carbon steel as the substrate, its surface is treated with an eco-friendly yellow zinc process. The head features a button-style flat design with an integrated widened flange, and the tail is equipped with a built-in drilling edge. Without the need for pre-drilling, it can complete the three processes of drilling, tapping, and locking in a single operation, serving as a highly efficient fastening solution widely used in steel structures and decoration engineering.

Product Applications
Building Steel Structures: Fastening roofing, cladding, and purlins for color steel industrial plants, warehouses, and greenhouses.
Decoration & Building Envelopes: Assembling light steel joist suspended ceilings/partition walls, billboards, ventilation ducts, and cold storage panels.
Industrial Scenarios: Fastening metal components such as photovoltaic mounts, shipping containers, and equipment enclosures.