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. 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. 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.

There 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 ‘square’ head is a suitable choice for applications that require more torque. It is most often used for switch coverings TrussThere are a variety of screw head types for different materials, and for different applications; screws are often used to fasten sheet metal, wood, and plastic. Binding/Binding Undercut Anyone who's ever driven a screw in knows how annoying cam-out is - when the bit slips out of the screw head as torque increases. It's not only frustrating, but it can also damage the screw head, preventing it from being driven in or out. The improved engagement of the star drive virtually eliminates cam-out and will pull wood components tightly together with ease. The ‘oval undercut’ is ideal for shorter screw lengths which require longer thread grip and more shallow countersinking. Fillister 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 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

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. 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 WasherIf you need something even smaller, ask you fastener distributor about sourcing out a trim head line that uses a #1 square head instead of the minimum #2 that is generally used on flat head types. The Flat 100+ uses a 100-degree angle instead of the standard 82-degree kind. It is an ideal choice for thinner materials that require a flatter head. Flat 100+ Undercut To stainless, or not to stainless? That is the question. Stainless steel screws provide the most corrosion resistance and are typically required in coastal applications. For most other applications, stainless steel is an optional and expensive upgrade.

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. The ‘oval trim’ head is the same as the regular ‘oval’ head, but with a smaller diameter and countersink. Round Hex heads allow greater torque to be applied, and are driven with the force working against the outside of the head, unlike other varieties, which are internally driven, They are commonly used for bolts. Pan The Flat 82+ head is used for flush surfaces. They are standard countersunk flat head screws. Flat 82+ Undercut 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.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. Trim

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. GRK is not responsible for product failure caused by the improper use or installation of its own or other building materials. The warranty does not cover damage as a result of alteration, accident, misuse, neglect, reuse, warn building materials or use not in accordance with the Screw Selection Guide. 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 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 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!They are self-tapping eliminating pre-drilling featuring the W-Cut™ threads for reduced torque, and our Climatek™ AC257 code approved coating. They are ESR code approved under ICC Report ESR-3201. ADVANTAGES