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.

Truss heads are characterized by a curved surface and an extra-wide top. They are often used to prevent tampering., having a lower profile than most round heads 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 The Flat 82+ head is used for flush surfaces. They are standard countersunk flat head screws. Flat 82+ UndercutThere are a wide variety of hidden fastener systems available. We’ve put together an infographic to help you decide which system is best for your application. The ‘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. A smaller diameter, in addition to a higher profile, than round or pan heads, makes the ‘fillister’ screw head effective for a deeper slot. Flat Fillister The type of head that your screw has will greatly affect the performance of the fasteners in your application. What that means is you should pay attention to which type of screw or nut and bolt you use. Many are better for use with specific materials, others should be put to use in certain circumstances. One of the more common types of screw seen in a wide variety of applications are trim-head screws and this style provides some unique benefits to your project. Other fasteners are Hex Head Cap Screws and Hex Bolts. 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.

It is identical to a flat head, except for its rounded surface. Countersunk screw head that includes a decorative rounded finish at the top. Often used for switch coverings. Oval Trim The ‘round’ head is less commonly used these days, but it offers a round-surfaced alternative to other screw heads. Round Countersunk 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 WasherThe round washer is a screw head which provides a larger bearing surface in applications where a round head is preferred. It is quite similar to the Modified Truss head style. Square (Set Screw) The ‘oval trim’ head is the same as the regular ‘oval’ head, but with a smaller diameter and countersink. Round

Truss heads are very useful for sheet metal work, insulation, and cabinetry-- an ideal choice for applications that require large holes, as the wide head prevents the screw from going through the hole. 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. GRK’s Trim™ Head screws are an excellent choice for most fine carpentry applications, as well as window extension jambs and more. Our Trim™ Head screws have the smallest screw head available; with screw lengths from 1-1/4″ (30 mm) to 5″ (125 mm). Most material splitting is prevented because of the Trim™ Head screw’s exceptionally small head and the W-Cut thread design. Fin/Trim™ screws are also available in white Climatek™ coated finish to blend in with white wooden trim boards.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+