Screw Comparison Guide

You can buy screws with a variety of head styles to meet specific project needs and can often select the fastener with your favorite drive system. Here’s a quick rundown on the uses for the most popular types.

Trim-Head Screws:
Look like finishing nails and can be used wherever you need the holding power of a screw but also require an unobtrusive look.

Round-Head Screw:
Gives you the broadened holding strength of a washer under a screw head but without the inconvenience of purchasing and handling a separate piece of hardware. By spreading the pressure, the washer-head screw avoids concentrated stresses that could crack plastics or damage thin wood products.

Pan-Head Screws:
Have a flat surface under the head that improves holding power when you mount hardware such as drawer slides. Using a screw diameter smaller than the mounting hole in the hardware gives you some adjustability.

Truss-head screws:
Feature an even larger washer surface for improved holding power. Truss heads are excellent for attaching false drawer fronts – large head hides an oversized hole that permits adjustment. Truss heads also provide excellent holding power when driven through the thin plywood backs of wall-mounted cabinets.

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Screw Comparison Guide

Wood-Screw Thread:
The thread design is similar to the deep-thread pattern but formed on a thicker shank. This design is often used on relatively soft materials such as brass or silicon bronze screws. Use this pattern instead of the deep thread when your project requires brass or bronze screws.

Double-Lead:
This pattern uses two threads around the shank for increased driving speed, is commonly used on drywall screws, and sometimes has a high/low design. Pullout resistance is not as good as the deep-thread design, but you’ll gain faster assembly times, especially when you’re using long screws.

Tapping Thread:
Although this is some-times called a "wood-tapping" screw, it is basically a sheet-metal design. Typically the threads extend from tip to head. Sheet-metal screws are generally manufactured to a higher standard than ordinary wood screws. Be sure to drill an adequate body hole in the first board to prevent a jaced joint.