Overview

A unique thread design and quality controlled manufacture spell the Zip-In(R) difference. Zip-In's(R) sophisticated heat treat process allows the screw to taper to the very tip of the point and is the source of Zip-In's(R) penetrating power. A second thread above the point engages after initial penetration and drills in the screw double fast. Zip-In(R) screws are faster driving, with a greater capacity for fastening heavier gauges of sheet metal than any other self-piercing type.

Features

• Undercut-indented hex washer slotted head
• Bright zinc plated
• Burr free
• Full 1/4" (no. 8) head will not strip out hex driver opening
• One 1/4" hex driver accommodates all sizes
• Undercut - always seats flush
• Some screws sizes available in pails
• Trademarked & patented head markings indicate one and only genuine Zip-ins. U.S. Patent No. D524,638