The ‘trim’ screw head is a standard countersunk screw that provides a flat, smooth surface after installation. It is an alternative to flat head screws, with a narrower head a more suitable choice for certain applications. The Flat Trim is often used as a finishing screw for carpentry and woodworking. Oval Undercut The ‘flat fillister’ is identical to a regular fillister screw, except for a flat top replacing the latter’s oval top. Flat 82+ It is the policy of GRK Fasteners Ltd. to provide top quality fasteners that require no predrilling, suitable for all applications and provide strength and finishing that customers and construction codes require.

Whether you are a professional or a do-it-yourselfer, you need a screw that is fast and easy to install, and most importantly, is reliable. Silva's star drive stainless steel finishing trim screws drive effortlessly into most wood types and are guaranteed to reduce the installation time on any project significantly. By saving you time, they'll be saving you money! With their tiny (6mm diameter) heads, Silva's stainless-steel finishing trim screws provide a neat, professional finish. They are suitable for a wide variety of exterior applications where a discreet screw head is preferred. A star drive bit is included free with each box. We recommend you buy a few spares, especially if you are working on a big project. The ‘hex washer’ head is an updated, more commonly used version of the hex head. It is characterised by an attached washer style flange under the head, creating a large surface connection area. It is sometimes used in combination drives, with phillips or slotted drives. Oval Binding screws are also used for other kinds of projects; they are often used to hold together large manuals, for bookbinding, and in leather products. TrimThe ‘binding’ type is a commonly used screw head type. It is an ideal choice for electrical applications; beneath the head is a prominent undercut area providing space for wire connections. The ‘pan’ head is the most commonly used rounded-top screw head. It works well in a range of applications that require a flat-bottomed screw. Hex Washer Less screw can be a good thing or it can be annoying. If you are already a little clumsy at handling fasteners, a trim head screw is only going to give you the slip more often. Because the head is smaller, there is less to grip, although that is normally made up for with a well recessed driver. Trim head screws are similar to flat head screws in both looks and design. They have a circular head that is intended to finish flush with the surface of the material being fastened. The heads are often formed with nibs to ensure a nicer countersunk finish when the hole was not predrilled.

The ‘flat undercut’ is very similar to the standard 82-degree head, having the same angle, but a shorter head. This allows it to provide a longer thread on the same screw length. Flat 100+ It is similar to ‘flat’ heads, but with no driving recess. The ‘round countersunk’ head is used for shorter screw lengths to provide a longer thread grip and more shallow countersinking. Round Washer The driver recess on the trim head is the same size as the one on a flat head screw of a similar size. It’s only the surface of the head around the recess that is smaller. This allows for less screw to show, much like that finishing nail. And just like the tiny nail, trim head screws are very often used in trim applications, especially on outdoor products. The ‘round’ head is less commonly used these days, but it offers a round-surfaced alternative to other screw heads. Round Countersunk

The ‘oval undercut’ is ideal for shorter screw lengths which require longer thread grip and more shallow countersinking. Fillister A screw is a type of fastener characterised by a helical ridge, also known as a male (or external) thread. Typically made of metal, screws fasten materials by digging in and wedging into them by turning, upon torque applied. The Flat Undercut is used instead of the standard flat head for some short sizes. The 100-degree kind enables more shallow countersinking than standard 82-degree flat heads. Hex The ‘oval trim’ head is the same as the regular ‘oval’ head, but with a smaller diameter and countersink. Round