Malco 6X3/8 Zip-In Self-Piercing Screws | 1/4″ Slotted Hex Washer Head Sheet Metal Screws | Fast & Easy Piercing | Zinc Plated (100 Count)

Malco HW6X3/8ZG
•A unique thread design and quality controlled manufacture spell the Zip-in difference.
•Zip-in’s sophisticated heat treat process allows the screw to taper to a fine, sharp point without sacrificing critical point strength.
•Ultra sharp tapered point will not mushroom, break or walk.
•Zip-in screws are faster driving, with a greater capacity for fastening heavier gauges of sheet metal than any other self-drilling type.
•Undercut-indented hex washer slotted head always seats flush.
•Full 1/4 in. (No. 8) head will not strip out of hex driver opening at any-time during operation.

Malco HW6X3/8ZG Zip-In Self-Piercing Screws— a 100‑count pack of zinc‑plated, 6×3/8 inch sheet metal screws with a 1/4″ slotted hex washer head. Built for speed, performance, and durable holds in thicker gauges of metal.

A unique thread design and meticulous manufacturing define the Zip-In advantage. The heat‑treat process hardens the screw while preserving a razor‑sharp tip, so it begins cutting with minimal effort. The geometry starts with a single starting thread that travels all the way to the tip, delivering immediate penetration power. As soon as entry begins, a second thread above the point engages, effectively drilling in the screw twice as it advances. The result is a faster drive, cleaner starts, and a stronger grip in heavier sheet metal than you’ll get with ordinary self‑piercing screws.

Key benefits that matter on the job

• Faster installationthanks to Zip-In’s dual-thread piercing action that reduces drive time and minimizes stripping.
• Penetration powerwith a fine, sharp point that preserves point integrity even after repeated use.
• Heavy-gauge capabilityengineered for fastening thicker sheet metal without pre-drilling.
• Reliable finishzinc plating provides corrosion resistance for long‑lasting performance in a variety of environments.
• Practical drive1/4″ slotted hex washer head aligns with common drivers, delivering even seating and a clean, flush finish.

Ideal applications and scenarios

• Sealing and securing metal panels in roofing, siding, flashing, and duct installations where quick piercing is essential.
• Projects involving mixed or heavier gauge sheet metal that benefit from rapid drive and strong clamping force.
• Repair tasks or fabrications where pre-drilling is impractical or would slow progress.

With its thoughtful design and robust zinc finish, Zip-In screws deliver repeatable performance across jobs that demand dependable piercing, strong holds, and time-saving installation. Choose the Malco Zip-In 6×3/8 self-piercing screws for faster fastening, fewer drive errors, and consistently solid results on heavier sheet metal.