6 x 1/2 in. Undercut Flat Head Mounting, Zinc, Phillips - Qty:100

Undercut Flat Head Mounting screws, Zinc, Phillips Qty:100

Designed for Drawer Slide Mounting, 6 x 1/2 inch

The undercut head is a variation of the standard flat head. The difference is that the countersink under the head does not extend down to the shank at an angle. The countersink is parallel to the top of the head towards the shank. This provides a small bearing surface.

This is used on the thinner gauge drawer slides so that the screw will seat better in the slide. It can also be used on metal parts with a small bearing surface at the base of the screw hole. Be aware that any time you cut steel from any part of the thread or head, you produce a weaker screw. By their nature, wood fibers can redirect the screw as it penetrates the wood, causing the head to sit at an angle. If this happens with a weakened head, such as an undercut, the head can be more likely to break off.

Zinc Plating: The silver appearance of Clear Zinc has been around for many years and remains very popular. It also provides moderate rust protection. Since this is true electroplating, the zinc coating is part of the steel's surface and is very durable. Other chemicals can be added to the process, and the coating depth can be controlled.

FEATURES:

• Undercut head allows the head to sit flush in the mounting hole of drawer slides.
• Works with Grass Drawer Slides but can be especially useful when installing slides that tend to use smaller mounting holes.
• Clear Zinc Plated
• #2 Phillips Drive Recess

It is advisable to use a self-centering bit such as our #MS-5107 (7/64 in. drill) to make sure everything is nicely aligned.